Facing mounting pressure to explain how the Boston Marathon bombers eluded suspicion, the FBI concluded Thursday that there was nothing the agency could do to prevent the attacks, the New York Times reports.
The FBI conducted server internal reviews of the bureau’s handling of Russian intelligence that warned the U.S. about one of the suspects, Tamerlan Tsarnaev.
Some members of Congress have argued the FBI could have done more to investigate Tsarnaev, who was killed during a shootout with police.
FBI officials said federal laws and Justice Department protocols prevented them from conducting a more extensive probe. Agents, for example, couldn’t conduct surveillance , such as wire-tapping, for that kind of investigations, the Times wrote.
The FBI also dismissed criticism that it should have investigated Tsarnaev after he returned from a trip to Russia in 2012 because there was no evidence he was radicalized.