The blast came days after terrorists attacked the Pearl Continental luxury hotel in the port city of Gwadar in Balochistan, killing at least eight persons, including four civilians and a Pakistan Navy soldier.
Balochistan Chief Minister Jam Kamal Khan Alyani condemned the blast and ordered a report on the incident.
The explosion occurred on Monday night when people were assembling for prayers near the mosque in the provincial capital Quetta's Satellite Town area.
