At least three people were killed and 15 others injured when a blast hit Quetta, the capital city of Balochistan province in southwest Pakistan, Wednesday evening, said rescue workers.
Rescue workers told a Xinhua correspondent on the spot that the blast could have been caused by a bomb planted inside a car, but the nature is yet to be determined by the bomb disposal squad.
At least eight vehicles were destroyed in the blast, which took place at about 5.10 p.m. near a government office on the Double Road in the city.
The blast also caused the gas cylinder of a vehicle parked nearby to explode, said eyewitnesses.
All the injured people have been shifted to a civil hospital in the city.
Hospital sources said several injured people were in critical condition and the toll could rise further.
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Pakistan's Prime Minister Nawaz Sharif condemned the attack in a statement issued by the PM office.
No group has claimed responsibility for the attack.