One police officer and eight civilians were killed in a blast that rocked a mosque near the city of Quetta, the capital of Balochistan province of Pakistan, on Friday evening, police told The Washington Post.
The explosion also injured at least 11 worshippers. No group has claimed the responsibility for the attack yet.
Local Police Chief Mohammad Ajmal told the media outlet that the death toll could go up, as some of the injured are in critical condition.
Days earlier, two servicemen died when a roadside bomb attack targeted a paramilitary force car in Quetta.
The attack was claimed by an offshoot of the Pakistani Taliban - Hizbul Ahrar.