On 16 December 2014, six gunmen affiliated with the Tehrik-i-Taliban Pakistan (TTP) conducted a terrorist attack on the Army Public School in the northwestern Pakistani city of Peshawar. The terrorists, all of whom were foreign nationals, comprising one Chechen, three Arabs and two Afghans, entered the school and opened fire on school staff and children, killing 149 people including 132 schoolchildren ranging between eight and eighteen years of age, making it the world's fifth deadliest school massacre. Pakistan launched a rescue operation undertaken by the Pakistan Army's Special Services Group (SSG) special forces, who killed all six terrorists and rescued 960 people. In the long term, Pakistan established the National Action Plan to crack down on terrorism.