Forty-eight people, including 35 militants, were killed on Monday as Pakistan's military operation continued in northwestern Pakistan's tribal region.
Pakistan's security forces started deploying fighter planes and gunship helicopters for launching offensive on the hideouts of the militants in Bajaur tribal agency, private Geo TV reported.
Thirteen members of a family were killed when a mortar shell landed on a residential house in the tribal agency.
Pakistan's security forces started its operation against local militants on Wednesday when the militants ambushed a army vehicle.