At least 52 people were killed and dozens more wounded in what authorities believe was a suicide attack at a religious procession in southwest Pakistan Friday.

The explosion occurred in the Mastung district of the restive Balochistan province, as people celebrated the birthday of the Prophet Mohammed, the information minister of the province Jan Achakzai told CNN.

Balochistan, Pakistan’s largest province by area, has seen a decades-long insurgency by separatists who demand independence from the country, citing what they say is the state’s monopoly and exploitation of the region’s mineral resources.

Meanwhile, a separate blast took place during Friday prayers at a mosque near Peshawar City in the northwestern Khyber Pakhtunkhwa province, killing at least two people and injuring 11.

Local police told CNN two explosions had occurred at the mosque in Hangu, causing its roof to collapse and potentially trapping worshipers inside.