The mother of the two Boston bombing suspects says she is convinced her sons are innocent and claims they have been set up.

26-year-old Tamerlan was killed in a shootout with police yesterday while 19-year-old Dzhokhar was captured alive last night. However he remains in a serious condition in hospital with gunshot wounds.

Zubeidat Tsaranaev said she cannot believe what has happened, saying that it is "100 per cent a set up":