A Pakistani police officer says a bomb attached to a motorcycle has killed one person and wounded 10 others near a police checkpoint in the country's southwest.

Senior police official Wazir Khan Nasir says the bomb was detonated through a remote-controlled device Monday in Quetta, the capital of Baluchistan province.

Nasir says most of the victims are civilians and that at least two of the wounded are in serious condition.

No group immediately claimed responsibility for the bomb. But the province has long been the scene of a low-level insurgency involving Baluch nationalist groups.

Islamist militants, including the al-Qaida affiliated group Lashkar-e-Jhangvi, also operate in Baluchistan.