Seven heavily armed Taliban fighters stormed APS Peshawar on December 16, 2014, martyring 150 people, of whom at least 134 were students. At the time of the incident, the Army Public School held more than 1,000 staff members and students. The terrorists began their attack in mid-morning when they accessed the large compound by scaling a wall. Entering the main assembly hall, where a large group of students was taking a lesson in first aid, they proceeded to shoot indiscriminately. The attackers, who were armed with grenades and automatic rifles, then went to the classrooms, where they concentrated their fire on teachers and older children. Commandos from the Special Services Group of the Pakistani army arrived at some point and at length succeeded in cornering the attackers, all of whom were wearing suicide vests lined with explosives. The attackers died in the confrontation, and some of the soldiers were injured by shrapnel from the vests. The attack was estimated to have lasted about eight hours. Even as it continued, alarmed parents gathered at the gates of the school compound. Responsibility for the massacre was claimed by Tehrik-e-Taliban Pakistan.