Putin thanks Trump for US tip-off that helped halt terrorist attack, Kremlin says

MOSCOW, Dec 17 (Reuters) - Russian President Vladimir Putin telephoned U.S. President Donald Trump on Sunday to thank him for a tip-off that helped prevent a terrorist bomb attack on a cathedral in the Russia city of St Petersburg, the Kremlin said.

Information provided by the Central Intelligence Agency (CIA) allowed Russian law-enforcement agencies to arrest the would-be attackers before they could carry out their plan, the Kremlin said in a statement posted on its Internet site.

A senior Trump administration official confirmed Trump and Putin had spoken on Sunday. However, there was no immediate confirmation from U.S. authorities that they had shared the intelligence with Russian officials.

The foiled attack was to have been carried out on Kazansky Cathedral, in Russia's second city of St Petersburg, and on other locations in the city where large numbers of people gather, the Kremlin statement said. The cathedral is a popular tourist site.

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US President Donald Trump and Russia's President Vladimir Putin shake hands during a meeting on the sidelines of the G20 Summit in Hamburg, Germany, on July 7, 2017. / AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

Leaders Donald Trump and Vladimir Putin meet at the G-20 in Hamburg. 

(Image: Reuters video)

US President Donald Trump and Russia's President Vladimir Putin hold a meeting on the sidelines of the G20 Summit in Hamburg, Germany, on July 7, 2017. / AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)

Leaders Donald Trump and Vladimir Putin meet at the G-20 in Hamburg. 

(Image: Reuters video)

HAMBURG, GERMANY - JULY 7, 2017: Melania Trump (L), First Lady of the United States, and Russia's President Vladimir Putin shake hands as they meet on the sidelines of a G20 summit. Mikhail Klimentyev/Russian Presidential Press and Information Office/TASS (Photo by Mikhail Klimentyev\TASS via Getty Images)
HAMBURG, GERMANY - JULY 07: In this photo provided by the German Government Press Office (BPA), Donald Trump, President of the USA (C) meets Vladimir Putin, President of Russia and President of the EU Commission Jean-Claude Juncker (L) during the G20 Summit on July 7, 2017 in Hamburg, Germany. The G20 group of nations are meeting July 7-8 and major topics will include climate change and migration. (Photo by BPA via Getty Images)
HAMBURG, GERMANY - JULY 07: In this photo provided by the German Government Press Office (BPA) Donald Trump, President of the USA (left), meets Vladimir Putin, President of Russia (right), at the opening of the G20 summit on July 7, 2017 in Hamburg, Germany. The G20 group of nations are meeting July 7-8 and major topics will include climate change and migration. (Photo by Steffen Kugler /BPA via Getty Images)
HAMBURG, GERMANY - JULY 07: International leaders attend the group photo on the first day of the G20 economic summit on July 7, 2017 in Hamburg, Germany. The G20 group of nations are meeting July 7-8 and major topics will include climate change and migration. (Photo by Sean Gallup/Getty Images)
HAMBURG, GERMANY - JULY 07: Russian President Vladimir Putin (L) talks to the US first lady Melania Trump (R) as they attend a state banquet in the Elbphilarmonie concert Hall on the first day of the G20 economic summit on July 7, 2017 in Hamburg, Germany. The G20 group of nations are meeting July 7-8 and major topics will include climate change and migration. . (Photo by Felipe Trueba - Pool / Getty Images)
HAMBURG, GERMANY - JULY 07: World leaders pose for a family photo during the G20 summit on July 7, 2017 in Hamburg, Germany. Leaders of the G20 group of nations are meeting for the July 7-8 summit. Topics high on the agenda for the summit include climate policy and development programs for African economies. (Photo by Matt Cardy/Getty Images)
Russia's President Vladimir Putin talks to U.S. President Donald Trump during their bilateral meeting at the G20 summit in Hamburg, Germany July 7, 2017. REUTERS/Carlos Barria
German Chancellor Angela Merkel takes part in a family photo along with French President Emmanuel Macron, U.S.President Donald Trump, Indonesia's President Joko Widodo, Mexico's President Enrique Pena Nieto, South African President Jacob Zuma, Argentina's President Mauricio Macri, Chinese President Xi Jinping, Russian President Vladimir Putin, Turkish President Recep Tayyip Erdogan, Brazilian President Michel Temer, South Korea's President Moon Jae-in, Italian Prime Minister Paolo Gentiloni, Canadian Prime Minister Justin Trudeau, India's Prime Minister Narendra Modi, Japanese Prime Minister Shinzo Abe, Australian Prime Minister Malcolm Turnbull, Britain's Prime Minister Theresa May, European Council President Donald Tusk, European Commission Jean-Claude Juncker, U.N. Secretary-general Antonio Guterres, Norway's Prime Minister Erna Solberg, Netherlands' Prime Minister Mark Rutte, Senegal's President Macky Sall, Singapore's Prime Minister Lee Hsien Loong, Spanish Prime Minister Mariano Rajoy, Vietnamese Prime Minister Nguyen Xuan Phuc, Saudi Arabia Minister of State Ibrahim Abdulaziz Al-Assaf, Economic Cooperation Organization (ECO) Secretary Jose Angel Gurria, World Trade Organization (WTO) Director Roberto Azevedo, International Monetary Fund (IMF) Managing Director Christine Lagarde, International Labour Organization (ILO) Director Guy Ryder, World Bank President Jim Yong Kim, Financial Stability Board (FSB) President Mark Carney and other leaders at the G20 leaders summit in Hamburg, Germany July 7, 2017. REUTERS/Wolfgang Rattay
US President Donald Trump (R) and Russia's President Vladimir Putin shake hands during a meeting on the sidelines of the G20 Summit in Hamburg, Germany, on July 7, 2017. / AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
French President Emmanuel Macron, U.S. President Donald Trump, Indonesia's President Joko Widodo, Mexico's President Enrique Pena Nieto, South African President Jacob Zuma, Argentina's President Mauricio Macri, German Chancellor Angela Merkel, Chinese President Xi Jinping, Russian President Vladimir Putin, Turkish President Recep Tayyip Erdogan, Britain's Prime Minister Theresa May, Australian Prime Minister Malcolm Turnbull, Japanese Prime Minister Shinzo Abe, India's Prime Minister Narendra Modi, Canadian Prime Minister Justin Trudeau, Italian Prime Minister Paolo Gentiloni and other leaders pose for a family photo at the G20 leaders summit in Hamburg, Germany July 7, 2017. REUTERS/Wolfgang Rattay
US President Donald Trump and Russia's President Vladimir Putin hold a meeting on the sidelines of the G20 Summit in Hamburg, Germany, on July 7, 2017. / AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
Russia's President Vladimir Putin talks to Melania Trump during the official dinner at the Elbphilharmonie Concert Hall during the G20 summit in Hamburg, Germany July 7, 2017. REUTERS/Kay Nietfeld,Pool
US President Donald Trump and Russia's President Vladimir Putin hold a meeting on the sidelines of the G20 Summit in Hamburg, Germany, on July 7, 2017. / AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
US President Donald Trump (C-R) and Russia's President Vladimir Putin (C-L) hold a meeting on the sidelines of the G20 Summit in Hamburg, Germany, on July 7, 2017. / AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
US President Donald Trump (R) and Russia's President Vladimir Putin shake hands during a meeting on the sidelines of the G20 Summit in Hamburg, Germany, on July 7, 2017. / AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
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Russian media reported last week that the Federal Security Service had detained followers of the Islamic State group who had been planning a suicide bomb attack on Kazansky Cathedral on Dec. 16.

"The Russian President thanked his American colleague for the information passed on by the Central Intelligence Agency, which helped detain a group of terrorists preparing explosions in St Petersburg's Kazansky Cathedral and other busy sites in the city," the Kremlin said.

The Kremlin did not give any details of the identity of the people detained.

In their phone call, Putin asked Trump to pass on his thanks to the CIA officers who had gathered the intelligence, according to the Kremlin statement.

Putin said Russia would alert U.S. authorities if it received information about any attack being planned on the United States, the Kremlin said.

HISTORY OF ATTACKS

Relations between Washington and Moscow are fraught because of disagreements over Ukraine, Syria and arms control as well as allegations from Washington -- denied by Russia -- that the Kremlin meddled in last year's U.S. presidential election.

However, Russian officials say Putin believes Trump is not to blame for the tension, and has tried to keep personal lines of communication open between the two men.

The Russian leader has said restoring ties between Moscow and Washington is vital because the two countries need to work together to counter global challenges, in particular the threat from violent Islamist radicals.

Russia has repeatedly been the target of attacks by Islamist groups.

In April this year, 14 people were killed when an explosion tore through a train carriage in a metro tunnel in St Petersburg. Russian police detained several suspects from mainly Muslim states in ex-Soviet central Asia.

In October 2015, Islamic State used an improvised bomb to bring down a Russian airliner over Egypt’s Sinai Peninsula, killing all 224 people on board.

In December 2013, two suicide bombers killed 34 people in attacks on a railway station and trolleybus in the Russian city of Volgograd.

More than 30 people were killed and around 130 injured in a suicide bombing at Moscow’s Domodedovo airport in January 2011. A year earlier, blasts struck Moscow metro stations during rush hour, killing 40 people. (Additional reporting by Steve Holland in Washington; Editing by Ralph Boulton)

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P362575 05: A class photo with Vladimir Putin, (fourth row, second from left) dated 1966 in St. Petersburg, Russia. (Photo by Laski Diffusion)
368975 01: (AMERICAS ONLY) FILE PHOTO: Russian President Vladimir Putin, right, poses for a photograph in this file photo with his parents Maria and Vladimir Putin in1985 just before his departure to Germany. Putin was sworn in as Russia''s second democratically elected president May 7, 2000, pledging to restore Russia as a great power. (Photo by Laski Diffusion/Newsmakers)
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N362234 01: (FILE PHOTO) Russian Prime Minister Vladimir Putin visits Uzbekistan President Islam Karimov on August 16, 1999. President Boris Yeltsin announced on national television Friday, Dec. 31, 1999 that he had resigned and presidential elections will be held within 90 days to replace him. Yeltsin said he was stepping down immediately because he wanted Putin to succeed him. Putin, the country's most popular politician, immediately took control of the government and will serve as acting president until the elections. (photo by Laski Diffusion/Liaison Agency)
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