The office of the governor for Sirnak province — which borders Iraq — said in a statement issued late Friday that 27 Kurdish rebels were killed in a five-day long offensive in a mountainous region.
It said five other rebels were captured alive.
Pro-Kurdish news agency Firat confirmed clashes in the area, but made no mention of any rebel deaths.
It was the second major offensive against the rebels this week. On Wednesday, officials said 21 were killed in nearby Diyarbakir province.
The rebels are fighting for autonomy in Turkey's mainly Kurdish southeast. Tens of thousands of people have died in the conflict since 1984.