Pakistan's military says fresh air strikes in restive tribal areas along the border with Afghanistan have left 31 militants dead.
An army statement on January 4 said attacks late on January 2 targeted the Tirah Valley in the Khyber region.
The statement said four militant hideouts and a suicide bomber training center were destroyed in the attacks.
Pakistan's military says it has killed more than 1,200 militants since it started an offensive in another tribal area -- North Waziristan -- last spring.
The Pakistani military and pro-government paramilitary forces have increased attacks on militant positions in the tribal areas following last month's massacre at a school in Peshawar when militants killed some 150 people, nearly all of them schoolchildren.