Tenn. shooting suspect followed al-Qaida leader: reports

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Investigators exploring Chattanooga rampage gunman Muhammed Abdulazeez's Internet search history have discovered evidence that he followed a radical American al Qaeda militant, according to numerous reports.

Both ABC News and The New York Times reported late Monday that Abdulazeez followed Anwar al-Awlaki, an American al Qaeda leader who has been linked to earlier attacks on U.S. soil -- including the Fort Hood shooter and so-called Christmas "underwear bomber." Al-Awlaki remained a prominent figure even after he died in a drone strike in 2011, thanks to videos he was featured in.

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Tenn. shooting suspect followed al-Qaida leader: reports
CHATTANOOGA, TN - JULY 16: Evidence markers sit on the ground at the scene of a shooting in the parking lot of the Armed Forces Career Center/National Guard recruitment office on July 16, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on a military recruiting station at a strip mall and then killed four U.S. Marines at an operational support center operated by the U.S. Navy at another location more than seven miles away, where the gunmen himself was also killed. (Photo by Jason Davis/Getty Images)
This April 2015 booking photo released by the Hamilton County Sheriffs Office shows a man identified as Mohammad Youssduf Adbulazeer after being detained for a driving offense. A U.S. official speaking on condition of anonymity identified the gunman in shootings at two Chattanooga military facilities as Muhammad Youssef Abdulazeez, who shares the same age and address as the man in the photo. (Hamilton County Sheriffs Office via AP)
CHATTANOOGA, TN - JULY 16: An angel statue sits in a makeshift memorial near the scene of a shooting at a Armed Forces Career Center/National Guard recruitment office on July 16, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on a military recruiting station at a strip mall and then killed four U.S. Marines at an operational support center operated by the U.S. Navy at another location more than seven miles away, where the gunmen himself was also killed. (Photo by Jason Davis/Getty Images)
CHATTANOOGA, TN - JULY 16: Zach, Zoe and Melissa Cates add to a makeshift memorial near the scene of a shooting at a Armed Forces Career Center/National Guard recruitment office on July 16, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on a military recruiting station at a strip mall and then killed four U.S. Marines at an operational support center operated by the U.S. Navy at another location more than seven miles away, where the gunmen himself was also killed. (Photo by Jason Davis/Getty Images)
CHATTANOOGA, TN - JULY 16: A makeshift memorial is sits outside of the scene of a shooting at a Armed Forces Career Center/National Guard recruitment office on July 16, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on a military recruiting station at a strip mall and then killed four U.S. Marines at an operational support center operated by the U.S. Navy at another location more than seven miles away, where the gunmen himself was also killed. (Photo by Jason Davis/Getty Images)
CHATTANOOGA, TN - JULY 16: Chattanooga Mayor Andy Burke (R) speaks as Tennessee Gov. Bill Haslam (L) and Chattanooga Police Chief Fred Fletcher (2nd L) listen during a press conference at the 911 Communications Center on July 16, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on a military recruiting station at a strip mall and then killed four U.S. Marines at an operational support center operated by the U.S. Navy at another location more than seven miles away, where the gunmen himself was also killed. (Photo by Jason Davis/Getty Images)
CHATTANOOGA, TN - JULY 16: Chattanooga Police Chief Fred Fletcher during a press conference at the 911 Communications Center on July 16, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on a military recruiting station at a strip mall and then killed four U.S. Marines at an operational support center operated by the U.S. Navy at another location more than seven miles away, where the gunmen himself was also killed. (Photo by Jason Davis/Getty Images)
CHATTANOOGA, TN - JULY 16: Chattanooga Police Chief Fred Fletcher (R) speaks as Chattanooga Mayor Andy Burke (L), Tennessee Governor Bill Haslam (2nd L) listen during a press conference at the 911 Communications Center on July 16, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on a military recruiting station at a strip mall and then killed four U.S. Marines at an operational support center operated by the U.S. Navy at another location more than seven miles away, where the gunmen himself was also killed. (Photo by Jason Davis/Getty Images)
CHATTANOOGA, TN - JULY 16: Tennessee Gov. Bill Haslam speaks during a press conference at the 911 Communications Center on July 16, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on a military recruiting station at a strip mall and then killed four U.S. Marines at an operational support center operated by the U.S. Navy at another location more than seven miles away, where the gunmen himself was also killed. (Photo by Jason Davis/Getty Images)
CHATTANOOGA, TN - JULY 16: Bullet holes are seen in the glass of a Armed Forces Career Center/National Guard recruitment office on July 16, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on a military recruiting station at a strip mall and then killed four U.S. Marines at an operational support center operated by the U.S. Navy at another location more than seven miles away, where the gunmen himself was also killed. (Photo by Jason Davis/Getty Images)
CHATTANOOGA, TN - JULY 16: Members of the FBI Evidence Response Team work the scene of a shooting in the parking lot of the Armed Forces Career Center/National Guard recruitment office on July 16, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on a military recruiting station at a strip mall and then killed four U.S. Marines at an operational support center operated by the U.S. Navy at another location more than seven miles away, where the gunmen himself was also killed. (Photo by Jason Davis/Getty Images)
An investigator searches under a vehicle parked outside an Armed Forces Career Center,Thursday, July 16, 2015, in Chattanooga, Tenn. A gunman opened fire outside the building Thursday morning. (AP Photo/John Bazemore)
In this frame from video, law enforcement officers surround a house in Hixson, Tenn., Thursday, July 16, 2015. A gunman unleashed a barrage of fire at two sites a few miles apart in Chattanooga, killing several, officials said. The attacker was also killed. (AP Photo/Alex Sanz)
The windows of the Armed Forces Recruitment Center have several bullet holes from a shooting as the area is cordoned off with blue shell casing markers in the parking lot on Thursday, July 16, 2015 in Chattanooga, Tenn. At least two military facilities in Tennessee were attacked in shootings Thursday. (Tim Barber/Chattanooga Times Free Press via AP)
US President Barack Obama (L) speaks during a meeting with FBI Director James Comey (R) in the Oval Office of the White House in Washington, DC, on July 16, 2015, on the shooting in Chattanooga, Tennessee. US President Barack Obama said the 'heartbreaking' shootings in Chattanooga that killed four Marines appeared to be the work of a lone gunman. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
A police officer investigates outside the Armed Forces Career Center after a gunman opened fire on the building Thursday, July 16, 2015, in Chattanooga, Tenn. Authorities say there were multiple casualties including the gunman. (AP Photo/John Bazemore)
Map locates two shooting sites. (via AP)
Police officers enter the Armed Forces Career Center through a bullet-riddled door after a gunman opened fire on the building Thursday, July 16, 2015, in Chattanooga, Tenn. Authorities say there were multiple casualties including the gunman. (AP Photo/John Bazemore)
Tennessee Highway Patrol Trooper Paul Clendenen guards the top of the C.B. Robinson Bridge at Amnicola Highway after a morning shooting near the Naval Reserve Center, in Chattanooga, Tenn. on Thursday, July 16, 2015.Chattanooga Mayor Andy Berke said there's "an officer down" at a military reserve center. (Tim Barber/ChattanoogaTimes Free Press via AP)
In this image made from video and released by WRCB-TV, authorities work an active shooting scene on amincola highway near the Naval Reserve Center, in Chattanooga, Tenn. on Thursday, July 16, 2015. Chattanooga Mayor Andy Berke says police are pursuing an active shooter after reports of a shooting at the military reserve center. (WRCB-TV via AP) 
In this image made from video and released by WRCB-TV, authorities work an active shooting scene on amincola highway near the Naval Reserve Center, in Chattanooga, Tenn. on Thursday, July 16, 2015. Chattanooga Mayor Andy Berke says police are pursuing an active shooter after reports of a shooting at the military reserve center. (WRCB-TV via AP)
A highway patrolman stands guard atop the C.B. Robinson Bridge as police and emergency vehicles crowd Amnicola Highway after a morning shooting near the Naval Reserve Center, in Chattanooga, Tenn. on Thursday, July 16, 2015. Chattanooga Mayor Andy Berke said there's "an officer down" at a military reserve center. (Tim Barber/Chattanooga Times Free Press via AP)
Police and emergency vehicles block Amnicola Highway after a morning shooting near the Naval Reserve Center, in Chattanooga, Tenn. on Thursday, July 16, 2015. Chattanooga Mayor Andy Berke said there's "an officer down" at a military reserve center. (Tim Barber/Chattanooga Times Free Press via AP)
Reserve Recruitment personnel stand outside a Navy recruiting building as the area is cordoned off with blue shell casing markers in the parking lot on Thursday, July 16, 2015 in Chattanooga, Tenn. At least two military facilities in Tennessee were attacked in shootings Thursday, including one at a Navy recruiting building, officials said. (Tim Barber/Chattanooga Times Free Press via AP)
Chattanooga police talk to Reserve Recruitment Center personnel at the Lee Hwy office as the area is cordoned off with blue shell casing markers in the parking lot on Thursday, July 16, 2015 in Chattanooga, Tenn. At least two military facilities in Tennessee were attacked in shootings Thursday, including one at a Navy recruiting building, officials said. (Tim Barber/Chattanooga Times Free Press via AP) 
Store employees look out their door next to the Reserve Recruitment Center as the area is cordoned off after a shooting on Thursday, July 16, 2015 in Chattanooga, Tenn. At least two military facilities in Tennessee were attacked in shootings Thursday, including one at a Navy recruiting building, officials said. (Tim Barber/ChattanoogaTimes Free Press via AP)
In this image made from video and released by WRCB-TV, authorities work an active shooting scene on amincola highway near the Naval Reserve Center, in Chattanooga, Tenn. on Thursday, July 16, 2015. Chattanooga Mayor Andy Berke says police are pursuing an active shooter after reports of a shooting at the military reserve center. (WRCB-TV via AP) 
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The news comes as Abdulazeez's family is trying to shed light on his personal struggles with mental illness, drug and alcohol addiction, factors they believe may have contributed to last week's fatal attack on two military sites that has rocked Chattanooga, Tennessee.

Through a spokesperson, Abdulazeez's family members have revealed he suffered from depression and possibly bipolar disorder. His parents said their son's mental illness caused him to turn to drugs and alcohol. Eventually he was caught in a downward spiral of substance abuse.

Another focus of the FBI's investigation are his travels before the attack. Abdulazeez spent seven months in Jordan last year. His parents have said they sent him there to "get away from bad influences in U.S."

Investigators are looking into who he was in contact with while in Jordan. A report emerged late Monday that he had visited Qatar as well, but officials from that country responded Tuesday saying he only flew through the country.

Intelligence officials tell The New York Times that there was no evidence yet of Abdulazeez making contact with the Islamic State or other extremist groups in the region. They caution that testing of his computer and phone are ongoing, and could reveal crucial evidence.

"The person who committed this horrible crime was not the son we knew and loved. For many years, our son suffered from depression. It grieves us beyond belief to know that his pain found its expression in this heinous act of violence," his family said in a statement.

SEE ALSO: Tennessee mourns the shooting victims:

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Chattanooga, Tennessee Shooting memorials, tributes
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Tenn. shooting suspect followed al-Qaida leader: reports
Marine First Sargeant John Coyne announces the names of the fallen Marines and Sailor during Roll Call at a memorial service Saturday, Aug. 15, 2015, in Chattanooga, Tenn. The service is for four Marines and a sailor killed as a result of attacks on a military recruiting station and a Naval operations center July 16 in Chattanooga. (AP Photo/Mark Gilliland)
In this image released by the U.S. Navy, pallbearers carry the casket of Petty Officer 2nd Class Randall Scott Smith at the Chattanooga National Cemetery, Tuesday, July 28, 2015. Scott was one of five servicemen whose death was the result of a series of shootings at military facilities in Chattanooga, Tenn., on July 16, 2015.(Spc. 2nd Class Justin Wolpert/U.S. Navy via AP)
Pallbearers carry the casket of U.S. Navy Logistics Specialist 2nd Class Randall Smith after a service at First Baptist Church, Tuesday, July 28, 2015, in Fort Oglethorpe, Ga. Smith was wounded and later died during an attack on military facilities in Chattanooga, Tenn., on July 16, 2015. (Michael D. Cole/U.S. Navy via AP)
Marines give a final salute to Marine Gunnery Sgt. Thomas Sullivan during ceremony at the Massachusetts Veterans' Memorial Cemetery, Monday, July 27, 2015, in Agawam, Mass. Sullivan was one of five service members killed by a gunman in Chattanooga, Tenn. on July 16. The gunman was killed by police. (Don Tregger/The Republican via AP, Pool)
Mourners arrive at Holy Cross Church for a funeral service for Gunnery Sgt. Thomas Sullivan in Springfield, Mass., Monday, July 27, 2015. Sullivan was one of five service members shot to death in the July 16 attack in Chattanooga. (AP Photo/Michael Dwyer)
Cathy Wells, center, the mother of Lance Cpl. Squire Wells, known as "Skip," stands after being presented with flowers at a memorial service at Sprayberry High School, where Wells attended, Tuesday, July 21, 2015, in Marietta, Ga. Crowds gathered at the suburban Atlanta high school to remember the Marine who was fatally shot in an attack on military facilities in Chattanooga, Tenn. (AP Photo/David Goldman)
Cathy Wells, left, the mother of Lance Cpl. Squire Wells, known as "Skip," is embraced by Lance Cpl. Kurt Bright, one of Wells' best friends upon arriving for a memorial service for her son at Sprayberry High School where he attended, Tuesday, July 21, 2015, in Marietta, Ga. Crowds gathered at the suburban Atlanta high school to remember the Marine who was fatally shot in an attack on military facilities in Chattanooga, Tenn. (AP Photo/David Goldman)
Mourners cheer during a memorial service for Lance Cpl. Squire Wells, known as "Skip," at Sprayberry High School where Wells attended, Tuesday, July 21, 2015, in Marietta, Ga. Crowds gathered at the suburban Atlanta high school to remember the Marine who was fatally shot in an attack on military facilities in Chattanooga, Tenn. (AP Photo/David Goldman)
Balloons are released during a memorial service for Lance Cpl. Squire Wells, known as "Skip," at Sprayberry High School where he attended, Tuesday, July 21, 2015, in Marietta, Ga. Crowds gathered at the suburban Atlanta high school to remember the Marine who was fatally shot in an attack on military facilities in Chattanooga, Tenn. (AP Photo/David Goldman)
Bill Lettmkuhl kneels by a makeshift memorial in front of near the Armed Forces Career Center on Friday, July 17, 2015, in Chattanooga, Tenn. Muhammad Youssef Abdulazeez, of Hixson, Tenn., attacked two military facilities on Thursday, in a shooting rampage that killed four Marines. (AP Photo/Mark Zaleski)
CHATTANOOGA, TN - JULY 19: Keari Anderson walks through the memorial near the Armed Forces Career Center/National Guard Recruitment Office which had been shot up on July 19, 2015 in Chattanooga, Tennessee. . The gunman Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall on July 16th and then drove more than seven miles away to an operational support center operated by the U.S. Navy and killed four United States Marines and a Navy sailor. The gunman was likely killed in a exchange of gunfire with the police. (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 18: Ronald May prays as he supports a cross at a memorial setup in front of the Armed Forces Career Center/National Guard Recruitment Office which had been shot up on July 18, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station on July 16th at the strip mall and then drove to an operational support center operated by the U.S. Navy and killed four United States Marines there and a Navy sailor. (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 19: Ron Fahy and Misty Fahy hold a sign that reads,' American Lives Matter', as they attend a prayer service near the Armed Forces Career Center/National Guard Recruitment Office which had been shot up on July 19, 2015 in Chattanooga, Tennessee. . The gunman Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall on July 16th and then drove more than seven miles away to an operational support center operated by the U.S. Navy and killed four United States Marines and a Navy sailor. The gunman was likely killed in a exchange of gunfire with the police. (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 19: Vehicles flying American flags are seen as they arrive near the Armed Forces Career Center/National Guard Recruitment Office which had been shot up on July 19, 2015 in Chattanooga, Tennessee. The gunman Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall on July 16th and then drove more than seven miles away to an operational support center operated by the U.S. Navy and killed four United States Marines and a Navy sailor. The gunman was likely killed in a exchange of gunfire with the police. (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 19: Jared Eldridge (L) and Zach Henderson fly American flags over highway 153 as they show their support for their country after four U.S. Marines and a Navy sailor were killed on July 19, 2015 in Chattanooga, Tennessee. The gunman Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall on July 16th and then drove more than seven miles away to an operational support center operated by the U.S. Navy and killed four United States Marines and a Navy sailor. The gunman was likely killed in a exchange of gunfire with the police. (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 19: John Kennon (L) and Lilla Kennon attend the East Ridge United Methodist Church for a prayer service to honor the four Marines and one Navy sailor killed during a shooting on July 19, 2015 in Chattanooga, Tennessee. The gunman Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall on July 16th and then drove more than seven miles away to an operational support center operated by the U.S. Navy and killed four United States Marines and a Navy sailor. The gunman was likely killed in a exchange of gunfire with the police. (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 19: Lilla Kennon wipes away tears as she attends the East Ridge United Methodist Church for a prayer service to honor the four Marines and one Navy sailor killed during a shooting on July 19, 2015 in Chattanooga, Tennessee. The gunman Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall on July 16th and then drove more than seven miles away to an operational support center operated by the U.S. Navy and killed four United States Marines and a Navy sailor. The gunman was likely killed in a exchange of gunfire with the police. (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 19: Teresa Jennings (L) and Miranda Jennings hold candles as they attend the East Ridge United Methodist Church for a prayer service to honor the four Marines and one Navy sailor killed during a shooting on July 19, 2015 in Chattanooga, Tennessee. The gunman Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall on July 16th and then drove more than seven miles away to an operational support center operated by the U.S. Navy and killed four United States Marines and a Navy sailor. The gunman was likely killed in a exchange of gunfire with the police. (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 19: Members of the Highways and Hedges Ministry prepare to setup a wooden cross near the Armed Forces Career Center/National Guard Recruitment Office which had been shot up on July 19, 2015 in Chattanooga, Tennessee. . The gunman Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall on July 16th and then drove more than seven miles away to an operational support center operated by the U.S. Navy and killed four United States Marines and a Navy sailor. The gunman was likely killed in a exchange of gunfire with the police. (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 18: U.S. Navy sailor Evan Montgomery places American flags in a memorial setup in front of the Armed Forces Career Center/National Guard Recruitment Office which had been shot up on July 18, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall on July 16th and then drove more than seven miles away to an operational support center operated by the U.S. Navy and killed four United States Marines and a Navy sailor. The gunman was likely killed in a exchange of gunfire with the police. (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 18: Christina Reed (L), Aaron Workman and Julia Morrison (R) pay their respects at a memorial setup at the entrance to the Navy Operational Support Center and Marine Corps Reserve Center where four United States Marines and a Navy sailor were killed on July 18, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall on July 16th and then drove more than seven miles away to an operational support center operated by the U.S. Navy and killed four United States Marines and a Navy sailor. The gunman was likely killed in a exchange of gunfire with the police. (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 18: Joan Jones holds Isaiah Watson ,2, as they pay their respect at a memorial setup at the entrance to the Navy Operational Support Center and Marine Corps Reserve Center where four United States Marines and a Navy sailor were killed on July 18, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall on July 16th and then drove more than seven miles away to an operational support center operated by the U.S. Navy and killed four United States Marines and a Navy sailor. The gunman was likely killed in a exchange of gunfire with the police. (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 18: A sign is seen among the memorial setup in front of the Armed Forces Career Center/National Guard Recruitment Office on July 18, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station on July 16th at the strip mall and then drove to an operational support center operated by the U.S. Navy and killed four United States Marines there, more than seven miles away, (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 19: Flowers and a sign are seen in the memorial near the Armed Forces Career Center/National Guard Recruitment Office which had been shot up on July 19, 2015 in Chattanooga, Tennessee. . The gunman Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall on July 16th and then drove more than seven miles away to an operational support center operated by the U.S. Navy and killed four United States Marines and a Navy sailor. The gunman was likely killed in a exchange of gunfire with the police. (Photo by Joe Raedle/Getty Images)
Heather Brame and her son, J.T. left, sign a poster by a makeshift memorial outside the Armed Forces Career Center Saturday, July 18, 2015, in Chattanooga, Tenn. The U.S. Navy says a sailor who was shot in the attack on a military facility in Chattanooga has died, raising the death toll to five people. (AP Photo/Mark Zaleski)
A man and woman comfort one another by a makeshift memorial outside the Armed Forces Career Center, Friday, July 17, 2015, in Chattanooga, Tenn. Counterterrorism investigators are trying to figure out why a 24-year-old Kuwait-born man, who by accounts lived a typical life in suburban America, attacked the career center and a Navy-Marine training center a few miles away in a shooting rampage that killed four Marines. (AP Photo/Mark Zaleski)
Laurie Norman becomes emotional as she looks at a makeshift memorial outside a military recruiting center Friday, July 17, 2015, where a gunman opened fire Thursday in Chattanooga, Tenn. Counterterrorism investigators are trying to figure out why a 24-year-old Kuwait-born man, who by accounts lived a typical life in suburban America, attacked the career center and a Navy-Marine training center a few miles away in a shooting rampage that killed four Marines. (AP Photo/John Bazemore)
CHATTANOOGA, TN - JULY 19: Toy soldiers are seen in the memorial setup near the Armed Forces Career Center/National Guard Recruitment Office which had been shot up on July 19, 2015 in Chattanooga, Tennessee. . The gunman Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall on July 16th and then drove more than seven miles away to an operational support center operated by the U.S. Navy and killed four United States Marines and a Navy sailor. The gunman was likely killed in a exchange of gunfire with the police. (Photo by Joe Raedle/Getty Images)
Regina Ingram looks at a makeshift memorial outside a military recruiting center Friday, July 17, 2015, where a gunman opened fire Thursday in Chattanooga, Tenn. Counterterrorism investigators are trying to figure out why a 24-year-old Kuwait-born man, who by accounts lived a typical life in suburban America, attacked the career center and a Navy-Marine training center a few miles away in a shooting rampage that killed four Marines. (AP Photo/John Bazemore)
CHATTANOOGA, TN - JULY 17: Melissa Gallagher prays with her children as they pay their respects to those killed while visiting a memorial placed in front of the Armed Forces Career Center/National Guard Recruitment Office which had been shot up on July 17, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station on July 16th at the strip mall and then drove to an operational support center operated by the U.S. Navy and killed four United States Marines there, more than seven miles away, (Photo by Joe Raedle/Getty Images)
Flags stand in a make-shift memorial as people gather at the scene of a military recruiting office in Chattanooga, Tenn., on Monday, July 20, 2015, four days after it was targeted in a pair of shootings that left five people dead. Muhammad Youssef Abdulazeez attacked two military facilities, including the career center, last week in a shooting rampage that killed a U.S. Navy sailor and four Marines. (AP Photo/Jay Reeves)
CHATTANOOGA, TN - JULY 17: Johnny Stapp whose son just entered the Marine Corps. places flags in the memorial in front of the Armed Forces Career Center/National Guard Recruitment Office which had been shot up on July 17, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station on July 16th at the strip mall and then drove to an operational support center operated by the U.S. Navy and killed four United States Marines there, more than seven miles away, (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 17: Eli Arnold places an American flag in the memorial in front of the Armed Forces Career Center/National Guard Recruitment Office which had been shot up on July 17, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station on July 16th at the strip mall and then drove to an operational support center operated by the U.S. Navy and killed four United States Marines there, more than seven miles away, (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 17: Alicia Nerren (R) prays with her children as they pay their respects to those killed while visiting a memorial placed in front of the Armed Forces Career Center/National Guard Recruitment Office which had been shot up on July 17, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station on July 16th at the strip mall and then drove to an operational support center operated by the U.S. Navy and killed four United States Marines there, more than seven miles away, (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 17: Laurie Norman is overcome with emotion as she pays her respects to those killed while visiting a memorial placed in front of the Armed Forces Career Center/National Guard Recruitment Office which had been shot up on July 17, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station on July 16th at the strip mall and then drove to an operational support center operated by the U.S. Navy and killed four United States Marines there, more than seven miles away, (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 17: Blake Miller and his mother, Ashley Miller whose husband is a Lieutenant in the Marine Corps pay their respects to those killed while visiting a memorial placed in front of the Armed Forces Career Center/National Guard Recruitment Office which had been shot up on July 17, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall and then drove to an operational support center operated by the U.S. Navy more than seven miles away and killed four United States Marines there. (Photo by Joe Raedle/Getty Images)
CHATTANOOGA, TN - JULY 17: Miller-Motte Technical College students and others join in prayer across the highway from the strip mall where a gunman attacked the Armed Forces Career Center/National Guard Recruitment Office on July 17, 2015 in Chattanooga, Tennessee. According to reports, Mohammod Youssuf Abdulazeez, 24, opened fire on the military recruiting station at the strip mall on July 16th and then drove to an operational support center operated by the U.S. Navy more than seven miles away and killed four United States Marines there. (Photo by Joe Raedle/Getty Images)
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