Armed forces had launched the operation to clear the village of Batwar, which lies in the Bajaur tribal district, of Taliban militants who had crossed over from the neighbouring Kunar province of Afghanistan.
"During the clash, 31 militants were killed while three security personnel embraced martyrdom," a senior official of the paramilitary Frontier Corps told AFP.
"Two members of the peace committee also embraced martyrdom while five security personnel got injured," he said.
Most of the area has now been cleared of militants, but the operation still continues to flush out the remaining fighters, another official said.
It was not possible to confirm the death toll independently because the far-flung district is inaccessible to media and aid workers.
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Good job, Pk Army. Better late than never.