At least four Pakistan soldiers were killed and five others critically injured when heavily-armed militants attacked an army garrison in the southwestern Balochistan province in the early hours of Wednesday morning, the army said.

A group of terrorists launched a "dastardly attack" on Zhob Garrison in the north of the province, leading to clashes in which three militants were also killed, the Inter-Services Public Relations (ISPR) - the media wing of the army- said in a statement.