Armed French gendarmes swoop on villages in manhunt for newspaper attackers

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French Police Hunt for Remaining Suspects in Paris Charlie Hebdo Shooting

(Reuters) - Armed and masked anti-terrorism police swooped on woodland villages northeast of Paris on Thursday in a manhunt for two brothers suspected of being the Islamist gunmen who killed 12 people at a French satirical weekly.

A day after the Paris attack, officers carried out house-to-house searches in the village of Corcy, a few km (miles) from a service station where police sources said the brothers were sighted in ski masks. Helicopters flew overhead.

The fugitive suspects are French-born sons of Algerian-born parents, both in their early 30s, and already under police surveillance. One was jailed for 18 months for trying to travel to Iraq a decade ago to fight as part of an Islamist cell. Police said they were "armed and dangerous".

United States and European sources close to the investigation said on Thursday that one of the brothers, Said Kouachi, was in Yemen in 2011 for a number of months training with Al Qaeda in the Arabian Peninsula (AQAP), one of the group's most active affiliates.

A Yemeni official familiar with the matter said the Yemen government was aware of the possibility of a connection between Said Kouachi and AQAP, and was looking into any possible links.

U.S. government sources said Said Kouachi and his brother Cherif Kouachi were listed in two U.S. security databases, a highly classified database containing information on 1.2 million possible counter-terrorism suspects, called TIDE, and the much smaller "no fly" list maintained by the Terrorist Screening Center, an interagency unit.

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Armed French gendarmes swoop on villages in manhunt for newspaper attackers
PARIS, FRANCE - JANUARY 10: People light the candles to commemorate the victims of Charlie Hebdo and kosher supermarket in front of HyperCacher supermarket at Porte de Vincennes, in Paris, France, on January 10, 2015. (Photo by Geoffroy Van der Hasselt/Anadolu Agency/Getty Images)
PARIS, FRANCE - JANUARY 10: A fresco reading 'Je suis Charlie' painted by artists Andre, Lek & Sowat, Cokney, Alxone, Legz, Arnaud Liard, MBS, Hoctez, Hugo Vitrani, Jean Charles de Castelbajac and Felipe Oliveira Baptista is seen at the Palais de Tokyo on January 10, 2015 in Paris, France. Four hostages and three suspects were killed when police ended two separate sieges at a kosher supermarket and a printing company on an industrial estate, following Wednesday's deadly attack on Charlie Hebdo magazine. A fourth suspect, Hayat Boumeddiene, 26, escaped and is wanted in connection with the murder of a policewoman. (Photo by Richard Bord/Getty Images)
PARIS, FRANCE - JANUARY 10: A woman holds up a placard reading 'Je suis Yohan et je suis mort parceque je suis Juif' (I am Yohan and I'm dead because I'am Jewish) at the site of the attack on a kosher market on January 10, 2015 in Paris, France. Four hostages and three suspects were killed when police ended two separate sieges at a kosher supermarket and a printing company on an industrial estate, following Wednesday's deadly attack on Charlie Hebdo magazine. A fourth suspect, Hayat Boumeddiene, 26, escaped and is wanted in connection with the murder of a policewoman. (Photo by Richard Bord/Getty Images)
Supporters hold signs reading 'Je suis Charlie' (I am Charlie) as they observe a minute of silence in tribute to the victims of three days of terror and twin siege dramas that claimed 17 victims, including the victims of the first attack by armed gunmen on the offices of French satirical newspaper Charlie Hebdo in Paris on January 7, before the French Top 14 rugby union match ASM Clermont vs CAB Brive at the Michelin stadium in Clermont-Ferrand, central France, on January 10, 2015. AFP PHOTO / THIERRY ZOCCOLAN (Photo credit should read THIERRY ZOCCOLAN/AFP/Getty Images)
Members of the GIGN (National Gendarmerie Intervention Group) sit in a helicopter flying over Dammartin-en-Goele where a hostage-taking was underway after police hunting the Islamist brothers who killed 12 people earlier this week exchanged fire with two men during a car chase, on January 9, 2015. Friday's drama unfolded almost 48 hours into a massive manhunt launched after the brothers burst into the office of the satirical weekly Charlie Hebdo and gunned down staff members and two policemen, saying they were taking revenge for the magazine's publication of cartoons offensive to many Muslims. The number of people seized was not immediately confirmed. AFP PHOTO / JOEL SAGET (Photo credit should read JOEL SAGET/AFP/Getty Images)
French riot officers patrol in Longpont, north of Paris, France, Thursday, Jan. 8, 2015. Scattered gunfire and explosions shook France on Thursday as its frightened yet defiant citizens held a day of mourning for 12 people slain at a Paris newspaper. French police hunted down the two heavily armed brothers suspected in the massacre to make sure they don't strike again. (AP Photo/Thibault Camus)
French police and gendarmes patrol in Dammartin-en-Goele where shots were fired and at least one hostage was taken in the same area police were hunting for two brothers accused of slaughtering 12 people in an Islamist assault, on January 9, 2015. The hostage drama was underway at a business in Dammartin-en-Goele, to the north-east of Paris, and came 48 hours into a massive manhunt for the Islamist gunmen who attacked the Charlie Hebdo offices on January 7. AFP PHOTO / JOEL SAGET (Photo credit should read JOEL SAGET/AFP/Getty Images)
PARIS, FRANCE - JANUARY 9: Police officers block a road near an industrial area where the suspects in the shooting attack at the satirical French magazine Charlie Hebdo headquarters are reportedly holding a hostage, in Dammartin-en-Goele, some 40 kilometres north-east of Paris, France, 09 January 2015. (Photo by Geoffroy Van der Hasselt/Anadolu Agency/Getty Images)
PARIS, FRANCE - JANUARY 9: Police officers block a road near an industrial area where the suspects in the shooting attack at the satirical French magazine Charlie Hebdo headquarters are reportedly holding a hostage, in Dammartin-en-Goele, some 40 kilometres north-east of Paris, France, 09 January 2015. (Photo by Geoffroy Van der Hasselt/Anadolu Agency/Getty Images)
Armed security forces fly overhead in a military helicopter in Dammartin-en-Goele, northeast of Paris, Friday Jan. 9, 2015. French security forces swarmed this small industrial town northeast of Paris Friday in an operation to capture a pair of heavily armed suspects in the deadly storming of a satirical newspaper. (AP Photo/Thibault Camus)
An ambulance arrives in Dammartin-en-Goele, northeast of Paris, Friday Jan. 9, 2015. Brothers suspected in a newspaper terror attack were cornered with a hostage inside a printing house on Friday, after they hijacked a car and police followed them to a village near Paris' main airport. (AP Photo/Peter Dejong)
Police and army forces take positions in Dammartin-en-Goele, northeast Paris, as part of an operation to seize two heavily armed suspects, Friday, Jan. 9, 2015. French security forces swarmed a small industrial town northeast of Paris Friday in an operation to capture a pair of heavily armed suspects in the deadly storming of a satirical newspaper. Shots were fired as the brothers stole a car in the early morning hours, said a French security official, who could not immediately confirm reports of hostages taken or deaths later in the day in the town of Dammartin-en-Goele, about 40 kilometers (25 miles) northeast of Paris. (AP Photo/Michel Spingler)
Police forces take positions in Dammartin-en-Goele, northeast Paris, as part of an operation to seize two heavily armed suspects, Friday, Jan. 9, 2015. French security forces swarmed a small industrial town northeast of Paris Friday in an operation to capture a pair of heavily armed suspects in the deadly storming of a satirical newspaper. Shots were fired as the brothers stole a car in the early morning hours, said a French security official, who could not immediately confirm reports of hostages taken or deaths later in the day in the town of Dammartin-en-Goele, about 40 kilometers (25 miles) northeast of Paris. (AP Photo/Michel Spingler)
PARIS, FRANCE - JANUARY 9: Police officers block a road near an industrial area where the suspects in the shooting attack at the satirical French magazine Charlie Hebdo headquarters are reportedly holding a hostage, in Dammartin-en-Goele, some 40 kilometres north-east of Paris, France, 09 January 2015. (Photo by Dursun Aydemir/Anadolu Agency/Getty Images)
Ambulances arrive in Dammartin-en-Goele, northeast Paris, as part of an operation to seize two heavily armed suspects, Friday, Jan. 9, 2015. French security forces swarmed a small industrial town northeast of Paris Friday in an operation to capture a pair of heavily armed suspects in the deadly storming of a satirical newspaper. Shots were fired as the brothers stole a car in the early morning hours, said a French security official, who could not immediately confirm reports of hostages taken or deaths later in the day in the town of Dammartin-en-Goele, about 40 kilometers (25 miles) northeast of Paris. (AP Photo/Michel Spingler)
French riot officers patrol in Longpont, north of Paris, France, Thursday, Jan. 8, 2015. Scattered gunfire and explosions shook France on Thursday as its frightened yet defiant citizens held a day of mourning for 12 people slain at a Paris newspaper. French police hunted down the two heavily armed brothers suspected in the massacre to make sure they don't strike again. (AP Photo/Thibault Camus)
Heavily armed police officers guard the General Directorate for Internal Security headquarters, seen in background, in Levallois Perret, outside Paris, Thursday, Jan. 8, 2015. Two brothers are suddenly the most wanted men in France, suspected of the armed onslaught on a newspaper office that claimed a dozen lives and horrified most of the world. Cherif Kouachi, 32, and Said Kouachi, 34, were the targets of a mammoth manhunt following Wednesday's slayings at the Paris offices of the satirical weekly Charlie Hebdo. (AP Photo/Christophe Ena)
Heavily armed police officers guard the General Directorate for Internal Security headquarters, in Levallois Perret, outside Paris, Thursday, Jan. 8, 2015. Two brothers are suddenly the most wanted men in France, suspected of the armed onslaught on a newspaper office that claimed a dozen lives and horrified this country and much of the world. Cherif Kouachi, 32, and Said Kouachi, 34, became the targets of a mammoth manhunt following Wednesday's murderous attack at the Charlie Hebdo offices in Paris. (AP Photo/Christophe Ena)
A heavily armed police officer guards the General Directorate for Internal Security headquarters, seen behind, in Levallois Perret, outside Paris, Thursday, Jan. 8, 2015. Two brothers are suddenly the most wanted men in France, suspected of the armed onslaught on a newspaper office that claimed a dozen lives and horrified this country and much of the world. Cherif Kouachi, 32, and Said Kouachi, 34, became the targets of a mammoth manhunt following Wednesday's murderous attack at the Charlie Hebdo offices in Paris. (AP Photo/Christophe Ena)
French police officers patrol in Longpont, north of Paris, France, Thursday, Jan. 8, 2015. Scattered gunfire and explosions shook France on Thursday as its frightened yet defiant citizens held a day of mourning for 12 people slain at a Paris newspaper. French police hunted down the two heavily armed brothers suspected in the massacre to make sure they don't strike again. (AP Photo/Thibault Camus)
French riot officers patrol in Longpont, north of Paris, France, Thursday, Jan. 8, 2015. Scattered gunfire and explosions shook France on Thursday as its frightened yet defiant citizens held a day of mourning for 12 people slain at a Paris newspaper. French police hunted down the two heavily armed brothers suspected in the massacre to make sure they don't strike again. (AP Photo/Thibault Camus)
SWAT police officer patrol in the village of Longpont, north east of Paris, hunting down the two heavily armed brothers suspected in the massacre at Charlie Hebdo newspaper, Thursday, Jan.8, 2015. Scattered gunfire and explosions shook France on Thursday as its frightened yet defiant citizens held a day of mourning for 12 people slain at a Paris newspaper. (AP Photo/Michel Spingler)
Police officers work at Paris Prefecture control room in Paris, Thursday Jan. 8, 2015. Two brothers are suddenly the most wanted men in France, suspected of the armed onslaught on a newspaper office that claimed a dozen lives and horrified this country and much of the world. Cherif Kouachi, 32, and Said Kouachi, 34, became the targets of a mammoth manhunt following Wednesday's murderous attack at the Charlie Hebdo offices in Paris. (AP Photo/Remy de la Mauviniere, Pool)
French police release wanted poster for remaining 2 #CharlieHebdo suspects http://t.co/9LtrJ9hK2A http://t.co/4KAXiBBU3w
JUST IN: French police: Said Kouachi and Cherif Kouachi wanted in Paris terror attack: http://t.co/0WbSnKIrgE http://t.co/wjmMg9LveB
#BreakingNews: V @jpney :"We got you" ID #CharlieHebdo terrorists;Said KOUACHI,Sheirf Kouachi &Hamid Mourad #France http://t.co/Sx4D1Btykw
WH releases photo of Obama talking to @fhollande. @Elysee releases photo of conversation after #CharlieHebdo attack. http://t.co/4kXjBudfwl
#BreakingNews: Photo of Cherif Kouachi, the second terrorist accused of the attack against #CharlieHebdo via @jpney http://t.co/W2W7LHgmxk
Police released this warrant naming the suspected terror trio.
Forensic experts examine the car believed to have been used as the escape vehicle by gunmen who attacked the French satirical newspaper Charlie Hebdo's office, in Paris, France, Wednesday, Jan. 7, 2015. Masked gunmen stormed the offices of a French satirical newspaper Wednesday, killing at least 11 people before escaping, police and a witness said. The weekly has previously drawn condemnation from Muslims. (AP Photo)
French President Francois Hollande, center, flanked with security forces arrives outside the French satirical newspaper Charlie Hebdo's office, in Paris, Wednesday, Jan. 7, 2015. Masked gunmen stormed the offices of a French satirical newspaper Wednesday, killing at least 11 people before escaping, police and a witness said. The weekly has previously drawn condemnation from Muslims. (AP Photo/Remy De La Mauviniere)
A truck tows the car used by armed gunmen who stormed the Paris offices of satirical newspaper Charlie Hebdo, killing 12 people, on January 7, 2015 in Paris. A source close to the investigation said two men 'armed with a Kalashnikov and a rocket-launcher' stormed the building in central Paris and 'fire was exchanged with security forces'. The source said a gunman had hijacked a car and knocked over a pedestrian while attempting to speed away. AFP PHOTO/DOMINIQUE FAGET (Photo credit should read DOMINIQUE FAGET/AFP/Getty Images)
Ambulances gather in the street outside the French satirical newspaper Charlie Hebdo's office, in Paris, Wednesday, Jan. 7, 2015. Masked gunmen stormed the offices of a French satirical newspaper Wednesday, killing at least 11 people before escaping, police and a witness said. The weekly has previously drawn condemnation from Muslims. (AP Photo/Francois Mori)
ADDS FULL NAME - FILE - In this Nov.2, 2011 file photo satirical French newspaper Charlie Hebdo's editor in chief, Stephane Charbonnier, also known as Charb, answers reporters in front of the headquarters of the newspaper, in Paris. Masked gunmen shouting "Allahu akbar!" stormed the Paris offices of a satirical newspaper Wednesday Jan.7, 2015, killing 12 people including the editor and a cartoonist before escaping. It was France's deadliest terror attack in at least two decades.(AP Photo/Thibault Camus, File)
FILE - In this Sept.19, 2012 file photo, Charb , the publishing director of the satyric weekly Charlie Hebdo, displays the front page of the newspaper as he poses for photographers in Paris. Masked gunmen shouting “Allahu akbar!” stormed the Paris offices of a satirical newspaper Wednesday Jan.7, 2015, killing 12 people including Charb, before escaping. It was France's deadliest terror attack in at least two decades. (AP Photo/Michel Euler, File)
An injured person is transported to an ambulance after a shooting, at the French satirical newspaper Charlie Hebdo's office, in Paris, Wednesday, Jan. 7, 2015. Masked gunmen stormed the offices of the newspaper Wednesday, killing at least 11 people before escaping, police and a witness said. The weekly has previously drawn condemnation from Muslims. (AP Photo/Thibault Camus)
France's former President and leader of the right-wing UMP party Nicolas Sarkozy delivers a speech in Paris on January 7, 2015, as the capital was placed under the highest alert status after heavily armed gunmen shouting Islamist slogans stormed French satirical newspaper Charlie Hebdo and shot dead at least 12 people in the deadliest attack in France in four decades. Police launched a massive manhunt for the masked attackers who reportedly hijacked a car and sped off, running over a pedestrian and shooting at officers. AFP PHOTO / ERIC FEFERBERG (Photo credit should read ERIC FEFERBERG/AFP/Getty Images)
French Prime Minister Manuel Valls (C) listens to former director of the satirical political Charlie Hebdo Philippe Val (3rdL) outside of the offices of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving 12 dead. Heavily armed gunmen shouting Islamist slogans stormed a Paris satirical newspaper office on January 7 and shot dead at least 12 people in the deadliest attack in France in four decades. Police launched a massive manhunt for the masked attackers who reportedly hijacked a car and sped off, running over a pedestrian and shooting at officers. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)
PARIS, FRANCE - JANUARY 07: Media gather at the scene after gunmen have attacked french satirical weekly 'Charlie Hebdo' at 10, Rue Nicolas Appert on January 7, 2015 in Paris, France. Twelve people were killed including two police officers. (Photo by Marc Piasecki/Getty Images)
A victim is evacuated on a stretcher on January 7, 2015 after armed gunmen stormed the offices of the French satirical newspaper Charlie Hebdo in Paris, leaving at least 11 people dead. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)
Firefighters carry an injured man on a stretcher in front of the offices of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving at least one dead according to a police source and 'six seriously injured' police officers according to City Hall. AFP PHOTO / PHILIPPE DUPEYRAT (Photo credit should read Philippe Dupeyrat/AFP/Getty Images)
Three gunmen carried out the attack in Paris. Here two of them http://t.co/8jNCu78Yqd
Map locating the Paris offices of satirical magazine Charlie Hebdo #AFP http://t.co/nJYCABZqAG
How the terrorists win: @Telegraph is now blurring the cover Mohammed cartoon of #CharlieHebdo in its reporting http://t.co/DffGzIrQZI
Une minute de silence en ce moment au @le_Parisien en solidarité avec les victimes de @Charlie_Hebdo_ http://t.co/mY1d72AamT
French soldiers patrols at the Eiffel Tower after a shooting at a French satirical newspaper, in Paris, France, Wednesday, Jan. 7, 2015. France reinforced security at houses of worship, stores, media offices and transportation after masked gunmen stormed the offices of a French satirical newspaper Wednesday, killing at least 11 people before escaping, police and a witness said. The weekly has previously drawn condemnation from Muslims. (AP Photo/Christophe Ena)
Can't sleep tonight, thoughts with my French cartooning colleagues, their families and loved ones #CharlieHebdo http://t.co/LqIMRCHPgK
French President Francois Hollande, center, flanked with security forces gestures, as he arrives outside the French satirical newspaper Charlie Hebdo's office, in Paris, Wednesday, Jan. 7, 2015. Masked gunmen stormed the offices of a French satirical newspaper Wednesday, killing at least 11 people before escaping, police and a witness said. The weekly has previously drawn condemnation from Muslims. (AP Photo/Remy De La Mauviniere)
French soldiers patrols at the Eiffel Tower after a shooting at a French satirical newspaper, in Paris, France, Wednesday, Jan. 7, 2015. France reinforced security at houses of worship, stores, media offices and transportation after masked gunmen stormed the offices of a French satirical newspaper Wednesday, killing at least 11 people before escaping, police and a witness said. The weekly has previously drawn condemnation from Muslims. (AP Photo/Christophe Ena)
PARIS, FRANCE - JANUARY 07: A general view of the scene at Charlie Hebdo offices after a deadly attack on the french satirical magazine on January 7, 2015 in Paris, France. Twelve people were killed including two police officers. (Photo by Aurelien Meunier/Getty Images)
French Justice Minister Christiane Taubira (C) walks with Paris' prosecutor Francois Molins outside of the headquarters of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving twekve dead. At least 12 people were killed when gunmen armed with Kalashnikovs and a rocket-launcher opened fire in the offices of French satirical weekly Charlie Hebdo on January 7. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)
PARIS, FRANCE - JANUARY 07: Poice officrs gather at Charlie Hebdo offices after a deadly attack on the french satirical magazine on January 7, 2015 in Paris, France. Twelve people were killed including two police officers. (Photo by Aurelien Meunier/Getty Images)
French Justice Minister Christiane Taubira reacts outside of the headquarters of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving twekve dead. At least 12 people were killed when gunmen armed with Kalashnikovs and a rocket-launcher opened fire in the offices of French satirical weekly Charlie Hebdo on January 7. AFP PHOTO / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images)
PARIS, FRANCE - JANUARY 07 : Police officers take security measures as health workers gather near the offices of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen attacked the offices leaving twelve dead, including two police officers. (Photo by Geoffroy Van der Hasselt S/Anadolu Agency/Getty Images)
PARIS, FRANCE - JANUARY 07 : Police officers take security measures near the offices of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen attacked the offices leaving twelve dead, including two police officers. (Photo by Geoffroy Van der Hasselt S/Anadolu Agency/Getty Images)
PARIS, FRANCE - JANUARY 07 : Police officers take security measures near the offices of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen attacked the offices leaving twelve dead, including two police officers. (Photo by Geoffroy Van der Hasselt S/Anadolu Agency/Getty Images)
French police officers and forensic experts examine the car used by armed gunmen who stormed the Paris offices of satirical newspaper Charlie Hebdo, killing 12 people, on January 7, 2015 in Paris. A source close to the investigation said two men 'armed with a Kalashnikov and a rocket-launcher' stormed the building in central Paris and 'fire was exchanged with security forces'. The source said a gunman had hijacked a car and knocked over a pedestrian while attempting to speed away. AFP PHOTO/DOMINIQUE FAGET (Photo credit should read DOMINIQUE FAGET/AFP/Getty Images)
Police officers and firemen gather outside the French satirical newspaper Charlie Hebdo's office, in Paris, Wednesday, Jan. 7, 2015. Masked gunmen stormed the offices of a French satirical newspaper Wednesday, killing at least 11 people before escaping, police and a witness said. The weekly has previously drawn condemnation from Muslims. (AP Photo/Thibault Camus)
Firefighters and police officers gather in front of the offices of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving eleven dead, including two police officers, according to sources close to the investigation. AFP PHOTO / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images)
An injured person is treated by nursing staff outside the French satirical newspaper Charlie Hebdo's office, in Paris, Wednesday, Jan. 7, 2015. France has raised its alert to the highest level after what President Francois Hollande said was a "terror attack" at the offices of a satirical magazine in Paris. Xavier Castaing, head of communications for the Paris police prefecture, has confirmed that at least 11 people, including one journalist, were killed. (AP Photo/Thibault Camus)
Police officers and firemen gather outside the French satirical newspaper Charlie Hebdo's office, in Paris, Wednesday, Jan. 7, 2015. Masked gunmen stormed the offices of a French satirical newspaper Wednesday, killing at least 11 people before escaping, police and a witness said. The weekly has previously drawn condemnation from Muslims. (AP Photo/Thibault Camus)
An injured person is evacuated outside the French satirical newspaper Charlie Hebdo's office, in Paris, Wednesday, Jan. 7, 2015. Police official says 11 dead in shooting at the French satirical newspaper. (AP Photo/Thibault Camus)
ALERTE INFO - Cabu, Wolinski, Charb, Tignous sont morts, selon l'avocat de #CharlieHebdo http://t.co/V12m5QDkGA http://t.co/WC0G7YEMC8
The car used by armed gunmen who stormed the Paris offices of satirical newspaper #CharlieHebdo Photo D. Faget #AFP http://t.co/i7tKpzijq0
People stand outside the French satirical newspaper Charlie Hebdo's office after a shooting, in Paris, Wednesday, Jan. 7, 2015. Masked gunmen stormed the offices of a French satirical newspaper Wednesday, killing at least 11 people before escaping, police and a witness said. The weekly has previously drawn condemnation from Muslims. (AP Photo/Thibault Camus)
Les tireurs de #ChalieHebdo face à une voiture de police. Ils ont fait feu, les policiers ont répliqué puis reculé http://t.co/Ld1sxkRLvW
Police officers gather near the offices of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving eleven dead, including two police officers, according to sources close to the investigation. AFP PHOTO / PHILIPPE DUPEYRAT (Photo credit should read Philippe Dupeyrat/AFP/Getty Images)
11 dead in shooting at French satirical newspaper in Paris http://t.co/aLnz6IYmUS Gun free zones do NOT work #2A http://t.co/Dczb44upVL
Firefighters and rescue services gather near the offices of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving eleven dead, including two police officers, according to sources close to the investigation. AFP PHOTO / PHILIPPE DUPEYRAT (Photo credit should read Philippe Dupeyrat/AFP/Getty Images)
Aucun acte barbare ne saura jamais éteindre la liberté de la presse. Nous sommes un pays unis qui saura réagir et faire bloc.
A victim is evacuated on a stretcher on January 7, 2015 after armed gunmen stormed the offices of the French satirical newspaper Charlie Hebdo in Paris, leaving at least 11 people dead. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)
Firefighters carry an injured man on a stretcher in front of the offices of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving at least 10 people dead. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)
PARIS SHOOTING: Hollande to hold emergency govt meeting, heads to the scene - pres office http://t.co/Q27XnP3AS3 http://t.co/JWziWCMdTr
Quartier bouclé par la police. Déclaration attendue de Hollande. #ChalieHebdo @LePoint http://t.co/t85yNGjuqZ
#BREAKING 11 Dead including some journalists after masked gunmen storm newspaper in France. Live pics nxt @News4Today http://t.co/lwTXVqCoKK
Police forces gather in street outside the offices of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving at least 10 people dead according to prosecutors. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)
France: 10 feared dead as gunshots fired at French satirical weekly #CharlieHebdo http://t.co/zUw5rfnfFO http://t.co/ZVyF1UtRNV
Here's more on the #CharlieHebdo shooting in Paris http://t.co/zOC9CFPR0T http://t.co/theZZhvjXm
VIDEO from the scene of fatal shooting in Paris http://t.co/sL3aG464Lt #CharlieHebdo http://t.co/FLC3mR5C2S
A photo taken on January 7, 2015 shows a bullet's impact on the window of the offices of the French satirical newspaper Charlie Hebdo in Paris, after armed gunmen stormed the offices leaving at least 11 people dead. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)
France's interior minister Bernard Cazeneuve (C, L) and Paris' Mayor Anne Hidalgo (C, R) arrive at the headquarters of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving at least 11 people dead. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)
A photo taken on January 7, 2015 shows a bullet's impact on the window of the offices of the French satirical newspaper Charlie Hebdo in Paris, after armed gunmen stormed the offices leaving at least 10 people dead. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)
Firefighters and police officers gather in front of the offices of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving eleven dead, including two police officers, according to sources close to the investigation. AFP PHOTO / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images)
Firefighters and police officers gather near the offices of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving eleven dead, including two police officers, according to sources close to the investigation. AFP PHOTO / PHILIPPE DUPEYRAT (Photo credit should read Philippe Dupeyrat/AFP/Getty Images)
Firefighters and police officers gather in front of the offices of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving eleven dead, including two police officers, according to sources close to the investigation. AFP PHOTO / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images)
French president François Hollande leaves the Palais de l'Elysee to go to the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving at least 10 people dead. AFP PHOTO / PATRICK KOVARIK (Photo credit should read PATRICK KOVARIK/AFP/Getty Images)
French president François Hollande leaves the Palais de l'Elysee to go to the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving at least 10 people dead. AFP PHOTO / PATRICK KOVARIK (Photo credit should read PATRICK KOVARIK/AFP/Getty Images)
France's interior minister Bernard Cazeneuve (C, L) and Paris' Mayor Anne Hidalgo (C, R) arrive at the headquarters of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving at least 11 people dead. AFP PHOTO / MARTIN BUREAU (Photo credit should read MARTIN BUREAU/AFP/Getty Images)
French president François Hollande leaves the Palais de l'Elysee to go to the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving at least 10 people dead. AFP PHOTO / PATRICK KOVARIK (Photo credit should read PATRICK KOVARIK/AFP/Getty Images)
French President Francois Hollande (2ndL) talks to the press next to Paris' Mayor Anne Hidalgo (C) upon his arrival at the headquarters of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen stormed the offices leaving eleven dead, including two police officers, according to sources close to the investigation. AFP PHOTO / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images)
PARIS, FRANCE - JANUARY 07 : The Imam of the eastern suburb of Drancy, Hassen Chalghoumi speaks to media as police officers take security measures near the offices of the French satirical newspaper Charlie Hebdo in Paris on January 7, 2015, after armed gunmen attacked the offices leaving twelve dead, including two police officers. (Photo by Geoffroy Van der Hasselt /Anadolu Agency/Getty Images)
PARIS, FRANCE - JANUARY 07: A general view of the scene after gunmen have attacked french satirical weekly 'Charlie Hebdo' at 10, Rue Nicolas Appert on January 7, 2015 in Paris, France. Twelve people were killed including two police officers. (Photo by Marc Piasecki/Getty Images)
BERLIN, GERMANY - JANUARY 07: Candles and a cartoon lies on the ground while people gather at a vigil in front of the French Embassy following the terrorist attack in Paris on January 7, 2015 in Berlin, Germany. Twelve people were killed including two police officers as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Carsten Koall/Getty Images)
BERLIN, GERMANY - JANUARY 07: A man holds a candle while other people gather at a vigil in front of the French Embassy following the terrorist attack in Paris on January 7, 2015 in Berlin, Germany. Twelve people were killed including two police officers as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Carsten Koall/Getty Images)
BERLIN, GERMANY - JANUARY 07: People gather at a vigil in front of the French Embassy following the terrorist attack in Paris on January 7, 2015 in Berlin, Germany. Twelve people were killed including two police officers as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Carsten Koall/Getty Images)
BERLIN, GERMANY - JANUARY 07: A woman holds a candle while other people gather at a vigil in front of the French Embassy following the terrorist attack in Paris on January 7, 2015 in Berlin, Germany. Twelve people were killed including two police officers as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Carsten Koall/Getty Images)
BERLIN, GERMANY - JANUARY 07: A man holds a pencil while other people gather at a vigil in front of the French Embassy following the terrorist attack in Paris on January 7, 2015 in Berlin, Germany. Twelve people were killed including two police officers as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Carsten Koall/Getty Images)
A woman takes part in a gathering on the Old Harbor in Marseille on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / ANNE-CHRISTINE POUJOULAT (Photo credit should read ANNE-CHRISTINE POUJOULAT/AFP/Getty Images)
MADRID, SPAIN - JANUARY 07: Women hold a placard reading 'Je Suis Charli' (I am Charlie) as a French flag flies on the wind during a gathering of people showing their support for the victims of the terrorist attack at French magazine Charlie Hebdo, in front of the Embassy of France on January 7, 2015 in Madrid, Spain. Twelve people were killed, including two police officers, as two gunmen opened fire at the magazine offices of Charlie Hebdo in Paris, France. (Photo by Pablo Blazquez Dominguez/Getty Images)
A woman holds a placard reading 'We are all Charlie' during a gathering on the Old Harbor in Marseille on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / ANNE-CHRISTINE POUJOULAT (Photo credit should read ANNE-CHRISTINE POUJOULAT/AFP/Getty Images)
People hold a vigil at the Old Harbor in Marseille on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo, in the French capital. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / ANNE-CHRISTINE POUJOULAT (Photo credit should read ANNE-CHRISTINE POUJOULAT/AFP/Getty Images)
The frontpage of last issue of French satyrical newspaper Charlie Hebdo is seen during a gathering in support of the victims of the terrorist attack on Charlie Hebdo, in front of French Embassy in Madrid, on January 7, 2015. Gunmen killed 12 people in an attack today in the offices of the French satirical weekly Charlie Hebdo in the most deadly attack in France since the 1954-1962 Algerian war. AFP PHOTO/ GERARD JULIEN (Photo credit should read GERARD JULIEN/AFP/Getty Images)
People stand around candles set near placards reading 'I am Charlie' during a gathering at the Place de la Republique (Republic square) in Paris, on January 7, 2015, to show solidarity for the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO ERIC FEFERBERG (Photo credit should read ERIC FEFERBERG/AFP/Getty Images)
Candles are displayed during a gathering in Lyon, central eastern France, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy.AFP PHOTO / JEFF PACHOUD (Photo credit should read JEFF PACHOUD/AFP/Getty Images)
A man holds a placard reading 'I am Charlie' on the Old Harbor in Marseille, southern France, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / ANNE-CHRISTINE POUJOULAT (Photo credit should read ANNE-CHRISTINE POUJOULAT/AFP/Getty Images)
A man lights candles near placards reading 'I am Charlie' during a gathering in Paris, on January 7, 2015, to show solidarity for the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO ERIC FEFERBERG (Photo credit should read ERIC FEFERBERG/AFP/Getty Images)
Womans hold a banner that reads in French, 'I am Charlie' during a vigil at the Old Harbor in Marseille on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo in Paris earlier in the day. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / ANNE-CHRISTINE POUJOULAT (Photo credit should read ANNE-CHRISTINE POUJOULAT/AFP/Getty Images)
A woman lights a candle during a gathering in Lyon, central eastern France, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy.AFP PHOTO / JEFF PACHOUD (Photo credit should read JEFF PACHOUD/AFP/Getty Images)
A woman lights a candle during a gathering in Lyon, central eastern France, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy.AFP PHOTO / JEFF PACHOUD (Photo credit should read JEFF PACHOUD/AFP/Getty Images)
A woman holds a paper reading 'Freedom of expression ' during a gathering at the Place de la Republique (Republic square) in Paris, on January 7, 2015, to show solidarity for the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO JOEL SAGET (Photo credit should read JOEL SAGET/AFP/Getty Images)
A woman holds up an issue of Frenc satirical weekly Charlie Hebdo during a gathering at the Place de la Republique (Republic square) in Paris, on January 7, 2015, to show solidarity for the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO JOEL SAGET (Photo credit should read JOEL SAGET/AFP/Getty Images)
People and lit candles forming the words 'Charlie Hebdo' are reflected in large mirror panels on the Old Port of Marseille, southern France, on January 7, 2015, during a gathering following an attack by unknown gunmen on the offices of the satirical weekly Charlie Hebdo. Heavily armed men shouting 'Allahu Akbar' stormed the Paris headquarters of a satirical weekly on January 7, killing 12 people in cold blood in the worst attack in France in decades. AFP PHOTO / ANNE-CHRISTINE POUJOULAT (Photo credit should read ANNE-CHRISTINE POUJOULAT/AFP/Getty Images)
Candles, and a sign that reads in French, 'weep' are placed on the ground as people hold a candle lit vigil at the Old Harbour in Marseille, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / ANNE-CHRISTINE POUJOULAT (Photo credit should read ANNE-CHRISTINE POUJOULAT/AFP/Getty Images)
A woman holds a banner that reads in French, 'I am Charlie' at the Old Harbor in Marseille on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / ANNE-CHRISTINE POUJOULAT (Photo credit should read ANNE-CHRISTINE POUJOULAT/AFP/Getty Images)
A woman holds an issue of Frenc satirical weekly Charlie Hebdo during a gathering at the Place de la Republique (Republic square) in Paris, on January 7, 2015, to show solidarity for the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO JOEL SAGET (Photo credit should read JOEL SAGET/AFP/Getty Images)
A man holds up a placard bearing the picture of late cartoonist Cabu and reading 'Cabu to the pantheon' during a gathering at the Place de la Republique (Republic square) in Paris, on January 7, 2015, to show solidarity for the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people, including 4 cartoonists on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO JOEL SAGET (Photo credit should read JOEL SAGET/AFP/Getty Images)
MADRID, SPAIN - JANUARY 07: People hold placards reading 'Je Suis Charli' (I am Charlie) as another one holds a front page of 'Charlie Hebdo' newspaper during a gathering of people showing their support for the victims of the terrorist attack at French magazine Charlie Hebdo, in front of the Embassy of France on January 7, 2015 in Madrid, Spain. Twelve people were killed, including two police officers, as two gunmen opened fire at the magazine offices of Charlie Hebdo in Paris, France. (Photo by Pablo Blazquez Dominguez/Getty Images)
Candles, a rose and a sign that reads in French, 'I am Charlie' are placed on the ground as people hold a candle lit vigil at the Old Harbour in Marseille, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / ANNE-CHRISTINE POUJOULAT (Photo credit should read ANNE-CHRISTINE POUJOULAT/AFP/Getty Images)
People hold A placard 'We are all Charlie' during a gathering at the Place de la Republique (Republic square) in Paris, on January 7, 2015, to show their solidarity for the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO JOEL SAGET (Photo credit should read JOEL SAGET/AFP/Getty Images)
MADRID, SPAIN - JANUARY 07: A woman holds a placard reading 'Je Suis Charli' (I am Charlie) during a gathering of people showing their support for the victims of the terrorist attack at French magazine Charlie Hebdo, in front of the Embassy of France on January 7, 2015 in Madrid, Spain. Twelve people were killed, including two police officers, as two gunmen opened fire at the magazine offices of Charlie Hebdo in Paris, France. (Photo by Pablo Blazquez Dominguez/Getty Images)
MADRID, SPAIN - JANUARY 07: People hold placards reading 'Je Suis Charli' (I am Charlie) during a gathering of people showing their support for the victims of the terrorist attack at French magazine Charlie Hebdo, in front of the Embassy of France on January 7, 2015 in Madrid, Spain. Twelve people were killed, including two police officers, as two gunmen opened fire at the magazine offices of Charlie Hebdo in Paris, France. (Photo by Pablo Blazquez Dominguez/Getty Images)
MADRID, SPAIN - JANUARY 07: A woman holds a placard reading 'Je Suis Charli' (I am Charlie) during a gathering of people showing their support for the victims of the terrorist attack at French magazine Charlie Hebdo, in front of the Embassy of France on January 7, 2015 in Madrid, Spain. Twelve people were killed, including two police officers, as two gunmen opened fire at the magazine offices of Charlie Hebdo in Paris, France. (Photo by Pablo Blazquez Dominguez/Getty Images)
Women stick a poster bearing the last cartoon of late cartoonist Charb on a bus station in Paris, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed men shouting 'Allahu Akbar' stormed the Paris headquarters of a satirical weekly on Wednesday, killing 12 people in cold blood in the worst attack in France in decades. Victims included four prominent cartoonists, including the chief editor, Charb, who had been holding a morning meeting when the assailants armed with Kalashnikovs burst in and opened fire, officials said. AFP PHOTO /ERIC FEFERBERG (Photo credit should read ERIC FEFERBERG/AFP/Getty Images)
People hold up signs that read in French, ' I am Charlie' as they rally to pay tribute in Marseille, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo in Paris earlier in the day. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / BORIS HORVAT (Photo credit should read BORIS HORVAT/AFP/Getty Images)
People hold up a sign that read in French, ' Neither Terrorism or Racism' as they rally to pay tribute in Marseille, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo in Paris earlier in the day. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / BORIS HORVAT (Photo credit should read BORIS HORVAT/AFP/Getty Images)
PARIS, FRANCE - JANUARY 07: A young person holds a poster saying 'Racism is stupid !!!' as crowds gather at 'Place de la Republique' for a vigil following the terrorist attack earlier today on January 7, 2015 in Paris, France. Twelve people were killed, including two police officers, as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Marc Piasecki/Getty Images)
MADRID, SPAIN - JANUARY 07: A woman reacts as another woman holds a placard reading 'Reporters without borders, for freedom of press' during a gathering of people showing their support for the victims of the terrorist attack at French magazine Charlie Hebdo, in front of the Embassy of France on January 7, 2015 in Madrid, Spain. Twelve people were killed, including two police officers, as two gunmen opened fire at the magazine offices of Charlie Hebdo in Paris, France. (Photo by Pablo Blazquez Dominguez/Getty Images)
PARIS, FRANCE - JANUARY 07: A person holds a pen, symbol of liberty of press, as crowds gather at 'Place de la Republique' during a vigil following the terrorist attack earlier today on January 7, 2015 in Paris, France. Twelve people were killed, including two police officers, as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Marc Piasecki/Getty Images)
PARIS, FRANCE - JANUARY 07: People hold a poster saying 'The liberty of press is priceless. Any fundamentalism won't pass' as crowds gather at 'Place de la Republique' for a vigil following the terrorist attack earlier today on January 7, 2015 in Paris, France. Twelve people were killed, including two police officers, as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Marc Piasecki/Getty Images)
PARIS, FRANCE - JANUARY 07: A man holds a sign saying 'We are Charlie' as crowds gather at 'Place de la Republique' for a vigil following the terrorist attack earlier today on January 7, 2015 in Paris, France. Twelve people were killed, including two police officers, as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Marc Piasecki/Getty Images)
PARIS, FRANCE - JANUARY 07: A sign saying 'Je suis Charlie' as crowds gather at 'Place de la Republique' for a vigil following the terrorist attack earlier today on January 7, 2015 in Paris, France. Twelve people were killed, including two police officers, as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Marc Piasecki/Getty Images)
PARIS, FRANCE - JANUARY 07: People hold a candles as crowds gather at 'Place de la Republique' for a vigil following the terrorist attack earlier today on January 7, 2015 in Paris, France. Twelve people were killed, including two police officers, as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Marc Piasecki/Getty Images)
People hold up signs that read in French, ' I am Charlie' and 'Their Islam is not ours' (C) as they rally to pay tribute in Marseille, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo in Paris earlier in the day. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / BORIS HORVAT (Photo credit should read BORIS HORVAT/AFP/Getty Images)
People light candles in solidarity with the victims of the terror attack on the French satirical weekly Charlie Hebdo in Paris earlier today, outside the French embassy in Stockholm, January 7, 2015. AFP PHOTO / TT NEWS AGENCY / CLAUDIO BRESCIANI ** SWEDEN OUT ** (Photo credit should read Claudio Bresciani/AFP/Getty Images)
A man holds a poster reading 'I am Charlie' in solidarity with the victims of the terror attack on the French satirical weekly Charlie Hebdo in Paris earlier today, outside the French embassy in Stockholm, January 7, 2015. AFP PHOTO / TT NEWS AGENCY / CLAUDIO BRESCIANI ** SWEDEN OUT ** (Photo credit should read Claudio Bresciani/AFP/Getty Images)
PARIS, FRANCE - JANUARY 07: Crowds gather at 'Place de la Republique' during a vigil following the terrorist attack earlier today on January 7, 2015 in Paris, France. Twelve people were killed, including two police officers, as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Marc Piasecki/Getty Images)
People gather to light candles under large mirror panels on the Old Port of Marseille, southern France, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly Charlie Hebdo. Heavily armed men shouting 'Allahu Akbar' stormed the Paris headquarters of a satirical weekly on January 7, killing 12 people in cold blood in the worst attack in France in decades. AFP PHOTO / ANNE-CHRISTINE POUJOULAT (Photo credit should read ANNE-CHRISTINE POUJOULAT/AFP/Getty Images)
PARIS, FRANCE - JANUARY 07: Crowds gather at 'Place de la Republique' for a vigil following the terrorist attack earlier today on January 7, 2015 in Paris, France. Twelve people were killed, including two police officers, as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Marc Piasecki/Getty Images)
PARIS, FRANCE - JANUARY 07: A man holds up his phone displaying the words 'Je suis Charlie' as crowds gather at 'Place de la Republique' for a vigil following the terrorist attack earlier today on January 7, 2015 in Paris, France. Twelve people were killed, including two police officers, as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Marc Piasecki/Getty Images)
People gather to light candles under large mirror panels on the Old Port of Marseille, southern France, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly Charlie Hebdo. Heavily armed men shouting 'Allahu Akbar' stormed the Paris headquarters of a satirical weekly on January 7, killing 12 people in cold blood in the worst attack in France in decades. AFP PHOTO / ANNE-CHRISTINE POUJOULAT (Photo credit should read ANNE-CHRISTINE POUJOULAT/AFP/Getty Images)
PARIS, FRANCE - JANUARY 07: Parisians hold a poster saying 'Students, Journalists, United' as crowds gather at 'Place de la Republique' in solidarity with murdered 'Charlie Hebdo' journalists on January 7, 2015 in Paris, France. Gunmen have attacked french satirical weekly 'Charlie Hebdo' at 10, Rue Nicolas Appert on January 7, 2015 in Paris, France. Twelve people were killed including two police officers. (Photo by Marc Piasecki/Getty Images)
PARIS, FRANCE - JANUARY 07: A woman holds a candle and a pen, symbol of liberty of press, as crowds gather at 'Place de la Republique' for a vigil following the terrorist attack earlier today on January 7, 2015 in Paris, France. Twelve people were killed, including two police officers, as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Marc Piasecki/Getty Images)
People hold placards reading, 'I am Charlie' in Clermont-Ferrand, on January 7, 2015, during a rally in support of the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO THIERRY ZOCCOLAN (Photo credit should read THIERRY ZOCCOLAN/AFP/Getty Images)
PARIS, FRANCE - JANUARY 07: Signs saying 'Je suis Charlie' are held up as crowds gather at 'Place de la Republique' for a vigil following the terrorist attack earlier today on January 7, 2015 in Paris, France. Twelve people were killed, including two police officers, as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Marc Piasecki/Getty Images)
PARIS, FRANCE - JANUARY 07: People hold signs saying 'Je suis Charlie' as crowds gather at 'Place de la Republique' for a vigil following the terrorist attack earlier today on January 7, 2015 in Paris, France. Twelve people were killed, including two police officers, as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Marc Piasecki/Getty Images)
PARIS, FRANCE - JANUARY 07: A man holds up his tablet displaying the words 'Je suis Charlie' as crowds gather at 'Place de la Republique' for a vigil following the terrorist attack earlier today on January 7, 2015 in Paris, France. Twelve people were killed, including two police officers, as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Marc Piasecki/Getty Images)
People holds pens in the air and show messages on mobile phones at a gathering in Trafalgar Square in central London to show their respect for the twelve people killed in Paris today in a terrorist attack at the headquarters of satirical publication 'Charlie Hebdo' on January 7, 2015. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)
People gather in Trafalgar Square in central London to show their respect for the twelve people killed in Paris today in a terrorist attack at the headquarters of satirical publication 'Charlie Hebdo' on January 7, 2015. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)
People hold posters as they gather in Trafalgar Square in central London to show their respect for the twelve people killed in Paris today in a terrorist attack at the headquarters of satirical publication 'Charlie Hebdo' on January 7, 2015. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)
BARCELONA, SPAIN - JANUARY 07: People hold pencils up during a gathering of people showing their support for the victims of the terrorist attack at French magazine Charlie Hebdo, in front of the Consulate of France on January 7, 2015 in Barcelona, Spain. Twelve people were killed, including two police officers, as two gunmen opened fire at the magazine offices of Charlie Hebdo in Paris, France. (Photo by David Ramos/Getty Images)
BARCELONA, SPAIN - JANUARY 07: People light candles on a Charlie Hebdo Magazine during a gathering of people showing their support for the victims of the terrorist attack at French magazine Charlie Hebdo, in front of the Consulate of France on January 7, 2015 in Barcelona, Spain. Twelve people were killed, including two police officers, as two gunmen opened fire at the magazine offices of Charlie Hebdo in Paris, France. (Photo by David Ramos/Getty Images)
BARCELONA, SPAIN - JANUARY 07: A woman holds a banner with a pencil painted during a gathering of people showing their support for the victims of the terrorist attack at French magazine Charlie Hebdo, in front of the Consulate of France on January 7, 2015 in Barcelona, Spain. Twelve people were killed, including two police officers, as two gunmen opened fire at the magazine offices of Charlie Hebdo in Paris, France. (Photo by David Ramos/Getty Images)
BARCELONA, SPAIN - JANUARY 07: People hold pencils up during a gathering of people showing their support for the victims of the terrorist attack at French magazine Charlie Hebdo, in front of the Consulate of France on January 7, 2015 in Barcelona, Spain. Twelve people were killed, including two police officers, as two gunmen opened fire at the magazine offices of Charlie Hebdo in Paris, France. (Photo by David Ramos/Getty Images)
Pens are held in the air as people gather in Trafalgar Square in central London to show their respect for the twelve people killed in Paris today in a terrorist attack at the headquarters of satirical publication 'Charlie Hebdo' on January 7, 2015. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)
A woman holds a placard reading, 'I am Charlie' in Clermont-Ferrand, on January 7, 2015, during a rally in support of the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO THIERRY ZOCCOLAN (Photo credit should read THIERRY ZOCCOLAN/AFP/Getty Images)
A woman holds a placard reading, 'We are all Charlie' in Clermont-Ferrand, on January 7, 2015, during a rally in support of the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO THIERRY ZOCCOLAN (Photo credit should read THIERRY ZOCCOLAN/AFP/Getty Images)
BERLIN, GERMANY - JANUARY 7: People gather to protest gun attack on satirical magazine 'Charlie Hebdo' in Paris, in front of French Embassy building in Berlin, Germany, on January 7, 2015. (Photo by Cuneyt Karadag/Anadolu Agency/Getty Images)
BERLIN, GERMANY - JANUARY 7: French Ambassador Philippe Etienne (R) and Thomas Oppermann (C), German politician with the Social Democratic Party (SPD), light candles as people gather to protest gun attack on satirical magazine 'Charlie Hebdo' in Paris, in front of French Embassy building in Berlin, Germany, on January 7, 2015. (Photo by Cuneyt Karadag/Anadolu Agency/Getty Images)
A woman holds a placard reading, 'I am Charlie' in Clermont-Ferrand, on January 7, 2015, during a rally in support of the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO THIERRY ZOCCOLAN (Photo credit should read THIERRY ZOCCOLAN/AFP/Getty Images)
A person holds a placard reading, 'I am Charlie' in Clermont-Ferrand, on January 7, 2015, during a rally in support of the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO THIERRY ZOCCOLAN (Photo credit should read THIERRY ZOCCOLAN/AFP/Getty Images)
LONDON, ENGLAND - JANUARY 07: A man holds a poster reading 'Je suis Charlie' (I am Charlie) during a vigil in Trafalgar Square for victims of the terrorist attack in Paris on January 7, 2015 in London, United Kingdom. Twelve people were killed including two police officers as two gunmen opened fire at the offices of the French satirical publication Charlie Hebdo. (Photo by Rob Stothard/Getty Images)
People hold posters as they gather in Trafalgar Square in central London to show their respect for the twelve people killed in Paris today in a terrorist attack at the headquarters of satirical publication 'Charlie Hebdo' on January 7, 2015. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)
A person holds a placard reading, 'I am Charlie' in Clermont-Ferrand, on January 7, 2015, during a rally in support of the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO THIERRY ZOCCOLAN (Photo credit should read THIERRY ZOCCOLAN/AFP/Getty Images)
A young woman holds a poster as people gather in Trafalgar Square in central London to show their respect for the twelve people killed in Paris today in a terrorist attack at the headquarters of satirical publication 'Charlie Hebdo' on January 7, 2015. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)
People hold posters as people gather in Trafalgar Square in central London to show their respect for the twelve people killed in Paris today in a terrorist attack at the headquarters of satirical publication 'Charlie Hebdo' on January 7, 2015. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)
A person holds a placard reading, 'I am Charlie' as others raise pens in Clermont-Ferrand, on January 7, 2015, during a rally in support of the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO THIERRY ZOCCOLAN (Photo credit should read THIERRY ZOCCOLAN/AFP/Getty Images)
People hold placards reading in French 'I am Charlie' during a gathering in front of the prefecture in Lille, northern France, on January 7, 2015, following an attack by unknown gunmen on the offices of satirical weekly Charlie Hebdo. Heavily armed men shouting 'Allahu Akbar' stormed the Paris headquarters of a satirical weekly on January 7, killing 12 people in cold blood in the worst attack in France in decades. AFP PHOTO / DENIS CHARLET (Photo credit should read DENIS CHARLET/AFP/Getty Images)
people holds a Charlie Hebdo frontpage (L) and a picture of late French cartoonist Charb reading 'together against barbarism' during a gathering in Toulouse on January 7, 2015, in solidarity for the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO / ERIC CABANIS (Photo credit should read ERIC CABANIS/AFP/Getty Images)
A person holds placards reading 'Charlie, Defend me .. against the extremes, against the FN (French far-right political party Front National), against bullshit, for liberty' (C) ; 'Love is stronger than hate' and 'I am Charlie', during a gathering at the Place de la Republique (Republic square) in Paris, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / DOMINIQUE FAGET (Photo credit should read DOMINIQUE FAGET/AFP/Getty Images)
Women hold placards reading 'I am Charlie' (L) and 'Together against barbarism' during a gathering in Toulouse on January 7, 2015, in solidarity for the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO / ERIC CABANIS (Photo credit should read ERIC CABANIS/AFP/Getty Images)
People hold placards reading 'I am Charlie' during a gathering in support of the victims of the terrorist attack on French satyrical newspaper Charlie Hebdo, in front of French Embassy in Madrid, on January 7, 2015. Gunmen killed 12 people in an attack today in the offices of the French satirical weekly Charlie Hebdo in the most deadly attack in France since the 1954-1962 Algerian war. AFP PHOTO/ GERARD JULIEN (Photo credit should read GERARD JULIEN/AFP/Getty Images)
people holds placards reading 'I am Charlie' during a gathering in Toulouse on January 7, 2015, in solidarity for the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO / ERIC CABANIS (Photo credit should read ERIC CABANIS/AFP/Getty Images)
A man holds a drawing during a gathering at the Place de la Republique (Republic square) in Paris, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / ERIC FEFERBERG ***ALTERNATIVE CROP*** (Photo credit should read ERIC FEFERBERG/AFP/Getty Images)
people gather in Toulouse on January 7, 2015, to show their solidarity for the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO / ERIC CABANIS (Photo credit should read ERIC CABANIS/AFP/Getty Images)
People hold placards with the front pages of several editions of Charlie Hebdo magazine during a gathering on January 7, 2015 in Lille, northern France, following an attack by unknown gunmen on the offices of satirical weekly Charlie Hebdo. Heavily armed men shouting 'Allahu Akbar' stormed the Paris headquarters of a satirical weekly on January 7, killing 12 people in cold blood in the worst attack in France in decades. AFP PHOTO / DENIS CHARLET (Photo credit should read DENIS CHARLET/AFP/Getty Images)
people hold placards reading 'I am Charlie' during a gathering in Toulouse on January 7, 2015, in support for the victims of the attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. Heavily armed gunmen massacred 12 people on Wednesday after bursting into the Paris offices of a satirical weekly that had long outraged Muslims with controversial cartoons of the prophet Mohammed. AFP PHOTO / ERIC CABANIS (Photo credit should read ERIC CABANIS/AFP/Getty Images)
People light candles forming the name Charlie during a gathering in Strasbourg, eastern France, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly Charlie Hebdo. Heavily armed men shouting 'Allahu Akbar' stormed the Paris headquarters of a satirical weekly on January 7, killing 12 people in cold blood in the worst attack in France in decades. AFP PHOTO / PATRICK HERTZOG (Photo credit should read PATRICK HERTZOG/AFP/Getty Images)
A WOman lays a candle during a gathering at the Place de la Republique (Republic square) in Paris, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / JOEL SAGET (Photo credit should read JOEL SAGET/AFP/Getty Images)
A man holds a candle and placard that reads in French, 'I am Charlie' during a gathering in Strasbourg, eastern France, on January 7, 2015, following an attack by unknown gunmen on the offices of the satirical weekly, Charlie Hebdo. France's Muslim leadership sharply condemned the shooting at the Paris satirical weekly that left at least 12 people dead as a 'barbaric' attack and an assault on press freedom and democracy. AFP PHOTO / PATRICK HERTZOG (Photo credit should read PATRICK HERTZOG/AFP/Getty Images)
A man holds up an edition of Charlie Hebdo magazine as people gather on the Place Royale in Nantes, western France, on January 7, 2015, to show their solidarity for the victims of the attack by unknown gunmen on the offices of the satirical weekly Charlie Hebdo. Heavily armed men shouting 'Allahu Akbar' stormed the Paris headquarters of a satirical weekly on January 7, killing 12 people in cold blood in the worst attack in France in decades. AFP PHOTO / GEORGES GOBET (Photo credit should read GEORGES GOBET/AFP/Getty Images)
GENEVA, SWITZERLAND - JANUARY 10: Candles and banners reading 'I'm Charlie' in french are placed for the victims of the Paris 'Charlie Hebdo' attack on January 10, 2015 in front of consulate general of France in Geneva, Switzerland. (Photo by Betul Yuruk/Anadolu Agency/Getty Images)
People place candles on January 10, 2015 during a demonstration at the end of Shabbat called by the Jewish Student's Union of France (UEJF) at the Porte de Vincennes in eastern Paris in homage to the four victims of the January 9 nearby hostage-taking drama at a kosher supermarket that ended with a police assault and the killing of the hostage-taker. Hundreds of thousands of people staged rallies across France on January 10 following three days of terror and twin siege dramas that claimed 17 victims, including 12 at the French satirical newspaper Charlie Hebdo in Paris on January 7. AFP PHOTO / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images)
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U.S. television network ABC reported that the brothers had been listed in the databases for "years."

Dave Joly, a spokesman for the Terrorist Screening Center, said he could neither confirm nor deny if the Kouachis were listed in counter-terrorism databases.

On Thursday, U.S. President Barack Obama made an unannounced visit to the French Embassy in Washington to pay his respects.

He wrote in a condolence book, "As allies across the centuries, we stand united with our French brothers to ensure that justice is done and our way of life is defended. We go forward together knowing that terror is no match for freedom and ideals we stand for - ideals that light the world."

In Paris, a policewoman was killed in a shootout with a gunman wearing a bulletproof vest on Thursday morning, setting a tense nation further on edge. Police sources were unable to say whether that incident was linked to the previous day's assault at the Charlie Hebdo weekly newspaper, but the authorities opened another terrorism investigation.

Bewildered and tearful French people held a national day of mourning. The bells of Notre Dame pealed for those killed in the attack on Charlie Hebdo, a left-leaning slayer of sacred cows whose cartoonists have been national figures since the Parisian counter-cultural heyday of the 1960s and 1970s.

The newspaper had been firebombed in the past for printing cartoons that poked fun at militant Islam and some that mocked the Prophet Muhammad himself. Two of those killed were police posted to protect the paper.

While world leaders described the attack as an assault on democracy, al Qaeda's North Africa branch praised the gunmen as "knight(s) of truth".

Many European newspapers either re-published Charlie Hebdo cartoons or lampooned the killers with images of their own.

Searches were taking place in Corcy and the nearby village of Longpont, set in thick forest and boggy marshland about 70 km north of Paris, but it was not clear whether the fugitives who had been spotted in the area were holed up or had moved on.

"We have not found them, there is no siege," an interior ministry official in Paris said.

Corcy residents looked bewildered as heavily armed policeman in ski masks and helmets combed the village meticulously from houses to garages and barns.

"We're hearing that the men could be in the forest, but there's no information so we're watching television to see," said Corcy villager Jacques.

In neighbouring Longpont, a resident said police had told villagers to stay indoors because the gunmen may have abandoned their car there. Anti-terrorism officers pulled back as darkness fell. The silence was broken by the sound of a forest owl.

Thursday's shooting of the policewoman on the streets of Paris's southern Montrouge district -- whether related or not -- caused more fear. Montrouge Mayor Jean-Loup Metton said the policewoman and a colleague came under fire while responding to a reported traffic accident. Witnesses said the assailant fled in a Renault Clio. Police sources said he wore a bullet-proof vest and had a an assault rifle and a handgun.

A police officer at the scene told Reuters he did not appear to resemble the Charlie Hebdo shooter suspects.

Prime Minister Manuel Valls, asked on RTL radio whether he feared a further attack, said: "That's obviously our main concern and that is why thousands of police and investigators have been mobilised to catch these individuals."

SUSPECT JAILED

Police released photographs of the two suspects, Cherif and Said Kouachi, 32 and 34. The brothers were born in eastern Paris and grew up in an orphanage in the western city of Rennes after their parents died.

The younger brother's jail sentence for trying to fight in Iraq a decade ago, and more recent tangles with the authorities over suspected involvement in militant plots, raised questions over whether police could have done more to watch them.

Cherif Kouachi was arrested on Jan. 25, 2005 preparing to fly to Syria en route to Iraq. He served 18 months of a three-year sentence.

"He was part of a group of young people who were a little lost, confused, not really fanatics in the proper sense of the word," lawyer Vincent Ollivier, who represented Cherif in the case, told Liberation daily.

In 2010 he was suspected of being part of a group that tried to break from prison Smain Ali Belkacem, a militant jailed for the 1995 bombings of Paris train and metro stations that killed eight people and wounded 120. The case against Cherif Kouachi was dismissed for lack of evidence.

A third person wanted by police, an 18-year-old man, turned himself into police in Charleville-Mézières near the Belgian border late on Wednesday. A legal source said he was the brother-in-law of one of the brothers. French media quoted friends as saying he was in school at the time of the attack.

In the wake of the killings, authorities tightened security at transport hubs, religious sites, media offices and stores. Police also increased their presence at entry points to Paris.

At Porte d'Orleans, one of the capital's main gateways, more than a dozen white police vans lined up the main avenue. Officers stood guard with bulletproof jackets and rifles.

The defense ministry said it sent 200 extra soldiers from parachute regiments across the country to help guard Paris.

Tens of thousands of people attended vigils across France on Wednesday, many wearing badges declaring "Je suis Charlie" in support of the newspaper and the principle of freedom of speech.

Newspapers in many countries republished Charlie Hebdo cartoons. Britain's Daily Telegraph depicted two masked gunmen outside the doors of Charlie Hebdo saying to each other: "Be careful, they might have pens."

Charlie Hebdo's lawyer Richard Malka said the newspaper would be published next Wednesday with one million copies compared to its usual print run of 60,000.

Muslim leaders condemned the shooting, but some have expressed fears of a rise in anti-Islamic feeling in a country with a large Muslim population. The window of a kebab shop next to a mosque in the town of Villefrance-sur-Saone was blown out by an overnight explosion. Local media said no one was hurt.

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