The Pakistani Army says at least four government soldiers were killed in overnight clashes with militants in the volatile tribal areas.
A military statement on July 12 said that militants attacked an army checkpoint in the South Waziristan tribal region, along the border with Afghanistan, close to midnight.
Nine militants were also killed in the clashes, the statement said.
The military launched a large-scale offensive in the region last year.
The current fighting is the last phase of the military action by government security forces.
The Waziristan region is a stronghold of the Pakistani Taliban and other Al-Qaeda-linked militants.