ISLAMABAD — Pakistan's army chief has confirmed the death sentences handed down to 12 militants convicted of multiple attacks that killed 34 people in recent years, mostly civilians but also members of the security forces.

Monday's statement says that along with the sentences for the "hardcore terrorists," Gen. Qamar Javed Bajwa also approved imprisonment for six people for their involvement in acts of terrorism.

It says the convicted militants had killed 34 people — 26 civilians and eight members of the security forces. One suspect, Ehsan Ullah, was acquitted.

The trials were closed to the public but allow defendants to hire lawyers.

Pakistan resumed military trials for militants and lifted a moratorium on the death penalty after a 2014 attack on a school in Peshawar that killed more than 150, mostly students.