New York Times
WASHINGTON - The Russian government declined to provide the FBI with information about one of the Boston marathon bombing suspects two years before the attack - information that probably would have prompted more scrutiny of the suspect, says an inspector general's review of how U.S. intelligence and law enforcement agencies could have thwarted the bombing.
Russian officials had told the FBI in 2011 that the suspect, Tamerlan Tsarnaev, "was a follower of radical Islam and a strong believer" and that Tsarnaev "had changed drastically since 2010 as he prepared to leave the United States for travel to the country's region to join unspecified underground groups."
But after an initial investigation by FBI agents in Boston, the Russians declined several bureau requests for additional information they had about Tsarnaev.
The inspector general's report found that it was only after the bombing occurred last April that the Russians shared with the FBI the additional intelligence, including information from a telephone conversation the Russian authorities had intercepted between Tsarnaev and his mother in which they discussed Islamic jihad.
Tsarnaev, who was killed attempting to elude the police, and his brother, Dzhokhar, are believed to be the sole suspects in the Boston attack.