Suicide bombings ripped through two religious ceremonies in Pakistan Friday, killing at least 56 people and injuring dozens more as worshipers celebrated the birthday of the Prophet Mohammad, according to police and local officials.

At least 52 people were killed and a further 50 wounded by an explosion at a religious procession in the Mastung district of the southwestern Balochistan province, Assistant Commissioner Atta Ul Munim told CNN.

Hours later, a separate blast took place during Friday prayers at a mosque near Peshaway City in the northwestern Khyber Pakhtunkhwa province, killing at least four people and injuring 11. The explosion caused the roof of the mosque to collapse, but it was not clear how many people remained inside.

No group has yet claimed responsibility for either of the explosions, which struck during a restive period in Pakistan, as it has weathered a surge of militant attacks in the buildup to general elections being held in January.