Prosecutors allege Azmat Tazhayakov helped dispose of Dzhokhar Tsarnaev 's items . Tazhayakov knew identity of bombers before the public , prosecutors said . His lawyers said Tazhayakov did everything he could to assist the FBI . Comment:
Prosecutors allege Azmat Tazhayakov helped dispose of Dzhokhar Tsarnaev 's items . Tazhayakov knew identity of bombers before the public , prosecutors said . His lawyers said Tazhayakov did everything he could to assist the FBI . They said statements from him during questioning were coerced .