Peshawar school massacre mastermind killed

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What? 

The mastermind behind the massacre at the Army School in Peshawar in 2014 in Afghanistan.

When? 

He was killed in an US drone strike on 9th of july.

Who? 

Umar Mansour also known as Khalifa Mansour, allegedly planned the killing of 150 students and teachers in Army School, Peshawar in 2014.
He was also considered responsible for attacks in the September 2015 on a Pakistan Air Force base in Peshawar's Badaber area and Bacha Khan University in Charsadda.

How? 

An official in Pakistan has said he had received credible information that in Tehreek-i-taliban Pakistan (TTP) died in a drone attack on July 9th.