One of the deadliest terror attacks in the world has to be the attack on an army school in December 2014. The attack, carried out by Taliban led to a massacre of 150 students at the Army Public School.
Although the militants who carried the attack were all killed by security agents who responded to the attack.
The militants first detonated a bomb before moving around classes to shoot at students and teachers.
Four men have been sentenced to death by a Pakistani military court, they have been identified as Maulvi Abdus Salam, Hazrat Ali, Mujeebur Rehman and Sabeel. All four were reportedly executed this morning.
Although the four men were not directly involved in the attacks, they were found guilty of aiding and abeting the terrorists.