Investigators have found head of another alleged suicide bomber, who struck former Prime Minister Benazir Bhutto s welcome procession in Karachi on Thursday, officials said. The head is extremely distorted. Investigators brought it to Jinnah Hospital Karachi. It is being operated upon after which the photograph of the suspected attacker would be issued prepared and publicised. Earlier police had issued the sketch of the first suicide bomber. Meanwhile, the government has constituted a four-member police team to probe into the two blasts in Ms Bhutto s procession. The team comprised Senior Superintendent of Police (SSP), Investigation East, Dr Amir Shaikh, SSP Anti-Violence Crime Unit Farooq Awan, SSP Investigation South Niaz Khoso and SSP (Crime Investigation Department) Raja Umer Khattab, officials said. The team will investigate the incident under the supervision of the Deputy Inspector General of Police (DIG) Investigation Manzoor Mughal.