QUETTA, Pakistan: At least one person was killed and more than a dozen injured by a blast at a mosque in southwestern Pakistan's Quetta Friday, according to police, the latest incident in restive Balochistan province.

The blast occurred at a mosque on the outskirts of the provincial capital. However, officials have not confirmed if the explosion was caused by an attack.

"Three of the injured are in a critical condition including the prayer leader as the blast occurred near him," Quetta's police chief Abdur Razzaq Cheema told AFP.

The explosion was also confirmed by officials at the government-run Sandeman hospital where the injured are being treated.

It comes as residents flocked to the mosque for Friday prayers.

There have been no claims of responsibility for the incident.

The blast comes weeks after a suicide blast claimed by the Daesh terror group in provincial capital Quetta killed at least 20 people.