The FBI declared Tamerlan Tsarnaev to be a suspect of a bombing.
Tsarnaev's mother said that FBI agents had told her they feared her son was an "extremist leader", and that he was getting information from "extremist sites"
 The FBI initially denied that it had contacted Tsarnaev, but then said that it actually had after Tsarnaev's mother talked about the FBI's contacts with her son on RT

