Pakistani civil society members take part in a candle light vigil for the victims of a school attacked by the Taliban in Peshawar, Dec. 16, 2014 in Islamabad, Pakistan.

A plainclothes security officer escorts students evacuated from a school as Taliban fighters attack another school nearby in Peshawar, Pakistan, Dec. 16, 2014.

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, Dec. 16, 2014.

Pakistani army troops are positioned close to a school under attacked by Taliban gunmen in Peshawar, Pakistan, Dec. 16, 2014.

A Pakistani man comforts a student standing at the bedside of a boy who was injured in a Taliban attack on a school, at a local hospital in Peshawar, Pakistan, Dec. 16, 2014.

Pakistani army troops cordon off a road leading to a school under attack by Taliban gunmen in Peshawar, Pakistan, Dec. 16, 2014.

Pakistani parents escort their children outside a school attacked by the Taliban in Peshawar, Pakistan, Dec. 16, 2014.

A Pakistani girl, who was injured in a Taliban attack in a school, is rushed to a hospital in Peshawar, Pakistan, Dec. 16, 2014.

Pakistani family members wait for their children outside a school attacked by Taliban in Peshawar, Pakistan, Dec. 16, 2014.

Ambulances drive away from a military run school that is under attack by Taliban gunmen in Peshawar, Dec. 16, 2014.

Pakistani army troops arrive to conduct an operation at a school under attack by Taliban gunmen in Peshawar, Pakistan, Dec. 16, 2014.

A Pakistani woman weeps as she waits at a hospital, where victims of a Taliban attack are being treated in Peshawar, Pakistan, Dec. 16, 2014.