After some hours, commandos from Special Services Group (SSG) arrived there. They handled the situation but it was too late. Many little flowers had been killed. According to reports, about 150 students were killed and about 100 students injured in this attack. The attack was about to have lasted about eight hours.
This responsibility of this attack was claimed by Tehrik-e-Taliban Pakistan (TTP). The leader of TTP has said that they did the attack because government attacked on his members. The most expected provocation was Operation Zarb-e-Azb, a government anti-militant offensive in North Waziristan, one of Pakistan’s tribal regions.