WASHINGTON (AP) — The Russian FSB intelligence security service told the FBI in early 2011 about information that Tamerlan Tsarnaev, one of the brothers suspected in the Boston Marathon bombings, was a follower of radical Islam, two law enforcement officials said Saturday.

Tamerlan Tsarnaev died in a shootout, and his younger brother was captured alive. They were identified by authorities and relatives as ethnic Chechens from southern Russia who had been in the U.S. for about a decade.