Women mourn their relative Mohammed Ali Khan, 15, a student who was killed during an attack by Taliban gunmen on the Army Public School in Peshawar December 16, 2014. Taliban gunmen in Pakistan took hundreds of students and teachers hostage on Tuesday in a school in the northwestern city, military officials said. Zohra Bensemra/Reuters A mother mourns her 15-year-old son Mohammed Ali Khan, 15, a student who was killed during an attack by Taliban gunmen on the Army Public School. Zohra Bensemra/Reuters Relatives of a student, who was injured during an attack by Taliban gunmen on the Army Public School, comfort each other outside Lady Reading Hospital in Peshawar, December 16, 2014. Fayaz Aziz/Reuters Ambulances carrying schoolchildren make their way from the Army Public School that was under attack by Taliban gunmen in Peshawar. Khuram Parvez/Reuters Pakistani men carry an injured student to a hospital following an attack by Taliban gunmen on a school in Peshawar on December 16, 2014. At least 130 people were killed in the attack on the army-run school in northwest Pakistan, officials said. A Majeed/AFP/Getty A wounded Pakistani student receives treatment at a hospital following an attack by Taliban gunmen on a school in Peshawar on December 16, 2014. Taliban insurgents killed at least 130 people, most of them children, after storming an army-run school in one of the country's bloodiest attacks in recent years. A Majeed/AFP/Getty Schoolchildren stand outside after being rescued in the northwestern city of Peshawar. Khuram Parvez/Reuters A Pakistani soldier stands guard as a man leaves with his son near the site of an attack by Taliban gunmen on a school in Peshawar. Aamir Qureshi/AFP/Getty A Pakistani woman reacts as she arrives near the site of an attack by Taliban gunmen on a school in Peshawar, where at least 130 people—most of them students—died on Dec. 16. A Majeed/AFP/Getty A man carries a student, who was injured during an attack by Taliban gunmen on the Army Public School, after he received treatment at a hospital in Peshawar. Khuram Parvez/Reuters Pakistani army personnel patrol the streets following an attack by Taliban gunmen on a school in Peshawar on December 16, 2014. Farooq Naeem/AFP/Getty A policeman stands beside empty coffins at the hospital after an attack by Taliban gunmen on the Army Public School in Peshawar December 16, 2014. Close to 130 students and nine staff members were killed on Tuesday after Taliban gunmen broke into a school and opened fire. Zohra Bensemra/Reuters