ISLAMABAD, February 28. /TASS/. At least four people have been killed and 12 others injured in an explosion at a mosque within a madrasa in the Pakistani city of Akora Khattak, Nowshera District, Geo TV reported.

According to the channel, medical facilities across the city have been placed on high alert. The explosion occurred during the last Friday prayer before the Muslim holy month of Ramadan, drawing a large crowd of worshippers.

Darul Uloom Haqqania Madrasa, where the incident took place, is one of the largest Islamic schools in Pakistan.