Boston bombing suspect under FBI surveillance for years, says mother

'They told me my son was an extremist leader,' says Zubeidat Tsarnaeva One of the two men suspected of being behind the Boston Marathon bombings was under FBI surveillance as a suspected "extremist" for at least three years, according to his parents. As questions were raised about how well known Tamerlan and Dzhokhar Tsarnaev were to federal investigators, their mother, Zubeidat Tsarnaeva, said that the FBI had spoken to the family regularly: "They were telling me that Tamerlan was really an ext...