Aunt of alleged Boston bomber Tamerlan Tsarnaev speaks with CNN in Russia . Tsarnaev 's parents were n't as devout , she said . She says she is not a suspect and that her son was killed by the police because he had an explosive device strapped to his body. He visited town where an Islamist militant was killed in December 2012 . A video of the militant was posted , then removed from Tsarnaev 's YouTube channel .
Aunt of alleged Boston bomber Tamerlan Tsarnaev speaks with CNN in Russia . She says she is not a suspect and that her son was killed by the police because he had an explosive device strapped to his body. He visited town where an Islamist militant was killed in December 2012 . A video of the militant was posted , then removed from Tsarnaev 's YouTube channel .