Russian authorities warned the FBI in 2011 about Tamerlan Tsarnaev, one of two Chechen brothers accused of carrying out last year’s Boston Marathon bombings, but U.S. authorities missed chances to detain him, NBC News reported on Tuesday.
Citing a congressional report it said could be released by the House of Representatives Homeland Security Committee as soon as Thursday, NBC News said the Russian intelligence agency FSB cabled the FBI about its concerns in March 2011, warning that Tsarnaev was known to have associated with militant Islamists.
The network said the FBI opened an investigation of Tsarnaev that month conducted by a joint task force of federal, state and local authorities. Tsarnaev was interviewed in person, and a memo was sent to the Customs and Border Protection database called TECS that would trigger an alert whenever he left or re-entered the United States.
But the investigation was closed in June 2011 after finding Tsarnaev had no links to terrorism, NBC quoted the report as saying.
Read more: http://www.nytimes.com/reuters/2014/03/25/us/25reuters-usa-explosions-boston-congress.html?hp