The shooting took place in Naushki district, 180 kilometres west of Quetta. There was no immediate claim of responsibility.
"Two unidentified gunnies riding a
cycle of violence opened fire on the five labourers from Punjab province constructing a mosque in the village of Kisankuri and then decamped," local police official Munir Mengal told AFP.He said that four labourers died at the scene while the fifth succumbed to his wounds in hospital.
A local intelligence official confirmed the incident and casualties.