Anwar Kazmi in the mosque where Tamerlan Tsarnaev worshipped
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Tamerlan Tsarnaev was 'an infrequent visitor' to mosque

Tamerlan Tsarnaev was killed in a shootout with police on Friday night. He was a suspect in the Boston Marathon bombings as well as in the death of a police officer.

The FBI is investigating whether the 26-year-old Muslim, who is an ethnic Chechen, may have been radicalised. A video on his YouTube channel suggested he may have become interested in Islamic extremism.

But Anwar Kazmi, a member of the Islamic Society at a mosque in Cambridge where Tamerlan worshipped, described him as "an infrequent visitor".

Produced by the BBC's David Botti and Anna Bressanin

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