Police has found the head of alleged suicide bomber which bled himself near Melody chowk on Sunday, killing at least 21 people after the Shudha-e-Conference in Islamabad.The news correspondent said suicide bomber's head was found from the roof of Aabpara police station, which has been sent for plastic surgery.Sources told suicide bomber was carrying 10kg explosives. Advisor to PM on Interior, Rehman Malik hand announced cash prize of Rs5 million for information about the whereabouts of suicide bomber.