Tamerlan Tsarnaev Jihad Call, The Russian warning to the United States government in 2011 about Tamerlan Tsarnaev, one of two brothers accused in the Boston Marathon bombing on April 15, was based on two intercepted telephone calls discussing jihad, both involving his mother, a law enforcement official said on Saturday.
The Russian authorities informed the F.B.I. in March 2011 that Mr. Tsarnaev, an ethnic Chechen who had lived in the United States for about a decade, had changed drastically, had adopted extremist views and planned to travel to Russia to meet with underground groups. The F.B.I. sent agents to interview Mr. Tsarnaev and his parents and found no evidence of any crime, but the Russians re-sent the same information to the C.I.A. in September 2011.
Despite repeated requests for additional information about what was behind the warning, Russian officials never explained the basis for their concern until after the Boston bombing, which killed three people and wounded more than 260. Only in recent days did the Russian authorities say that the intercepted phone calls had prompted their messages to the United States government, said the official, who would speak about the continuing investigation only on condition of anonymity.
Read More:nytimes
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