People inspect the site of a collapsed classroom roof at Al-Khair School and Madrasa Darul Quran wa Niswan in Dir Colony, Peshawar, Pakistan, a day after the incident. (EPA Images pic)PESHAWAR: The families of children killed in a roof collapse at a school in northwest Pakistan called for "justice" on Friday, the day after more than 30 pupils and a teacher were crushed to death.

A woman teacher and 32 students, mostly younger than 14, died in the building collapse in the city of Peshawar on Thursday morning.

"The parents of all these children must receive justice," tailor Muhammad Wahab, who lost his 11-year-old nephew Hammad in the accident, told AFP on Friday.

"I appeal to our rulers," he said, adding that Hammad had been "doing well in school" before the tragedy.