At least 11 dead in Pakistan bombing

At least 11 people are dead after a powerful bomb exploded near a police building in southwestern Pakistan.

At least 11 people are dead after a powerful bomb exploded near a police building in Pakistan. (AAP)

A powerful car bombing near the office of the provincial police chief in southwestern Pakistan has killed 11 people and wounded 20.

The explosion near the police chief's office in Quetta, the capital of Baluchistan province, was powerful enough that it was heard across the city, shattering windows of nearby buildings, said police spokesman Shahzada Farhat.

Wasim Beg, a spokesman at a government hospital, said the death toll from the bombing had risen to 11 throughout the morning. He said some people remained in critical condition.

TV footage showed several badly damaged cars and a road littered with broken glass.

Anwarul Haq Kakar, a spokesman for the provincial government, said the bomb was planted in a moving car, but officers were trying to determine whether it was a suicide attack.

No one has claimed responsibility for the attack, but Kakar blamed neighbouring India for the blast. He offered no evidence.

AP