A blast in Quetta on Saturday killed at least 15 and injured 32 people, police said, day after a powerful blast killed three people in Bajaur Agency.

Security officials said the explosion set on fire multiple vehicles at Pishin Stop in the provincial capital of Balochistan.

According to media reports, the injured were being shifted to Civil Hospital.

Balochistan Home Minister Sarfraz Bugti said the nature of the blast couldn't be ascertained, adding that security forces might be the target. 

Mineral-rich Balochistan, where Gwader is located, has been plagued for decades by a separatist insurgency and sectarian killings.