Representational imageRebel group Tehreek-e-Taliban Pakistan (TTP) has claimed responsibility for the killing of Pakistan air force Group Captain Asim Tariq in Islamabad on Sunday afternoon. The suspect, now arrested, has been identified as Saad Abbasi (22).The TTP also released mobile video and CCTV footage on social media showing the slain officer in his car wearing a seat belt, something which repudiates Islamabad police's narrative that the officer went down saving a woman from an abductor on the streets. TTP said its "Special Target Killers Unit" carried out the killing.Tariq was attached to the intelligence directorate that recently provided the coordinates in the recent drone strike in Afghanistan which resulted in the deaths of a large number of children and women, sources said add