Pakistan's army says it killed six militants in a search operation in South Waziristan near the Afghan border where two soldiers were also killed in the clash.
A military statement says the operation was conducted Saturday in the Spina Mela area based on information that some militants entered there from Afghanistan disguised as tribesmen being repatriated into the area.
The tribes were dislocated from Spina Mela for a military operation in 2009 and were being repatriated.
The statement says weapons and communications tools were seized from the scene. It says the militants were in contact with their handlers in the Paktia province of Afghanistan.
Mohammad Khurasani, spokesman for Pakistani Taliban militants, claimed his group attacked the troops in South Waziristan.