FBI agents interviewed Tamerlan Tsarnaev — the 26-year-old Boston Marathon bombing suspect killed following a gunfight with authorities overnight — in 2011 at the request of foreign government, an FBI official said Friday.
The other government — who the official would not name — suspected that Tsarnaev may have ties to extremist groups.
The FBI investigated, including interviewing Tsarnaev, but the matter was closed after no derogatory information was found, according to the official.
Tamerlan Tsarnaev and his younger brother, Dzhokar, are believed to have placed explosive devices along the last bit of the Boston Marathon route Monday. The younger brother fled after the gunfight Thursday night, and is possibly cornered by law enforcement Friday night.
From CNN’s Carol Cratty and Joe Johns
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