Islamabad: Six militants who plotted and aided Pakistan's worst ever terrorist attack at a Peshawar school are set to be hanged after Army Chief General Raheel Sharif confirmed their death sentences.

The men, belonging to the Tehrik-e-Taliban Pakistan, were convicted late Thursday for their role in the December 2014 massacre at Peshawar's Army Public School (APS) that claimed the lives of 151 people, including 141 children, The Nation reported.