ISLAMABAD, Oct 15 (Reuters) - At least 27 students, most younger than 13, were killed in Pakistan on ‌Thursday, along with a teacher, when a school ‌roof collapsed during classes in the northwestern city of Peshawar, authorities said, ​warning that the death toll could rise.

Television images showed ambulances rushing to the site at the privately-run Al-Khair Education Center school while rescuers pulled bloodied students from the rubble.

"We have ‌taken out at least ⁠45 children," said district emergency officer Iftikhar Khan, adding that some more children were reported ⁠to be buried in the rubble.

Rescue teams were working to extricate bodies and take the injured to hospital, said government ​official Bilal ​Faizi.

Twenty injured and most of ​the dead were brought ‌to the city's Lady Reading Hospital, its spokesperson, Mohammad Asim, said.