PKK militants killed three Turkish soldiers and wounded three in an attack on a military outpost in southeast Turkey overnight, media reported on Tuesday.
Meanwhile, 9 militants were also dead in the clashes.
It said the attack by the outlawed Kurdistan Workers Party (PKK) militants occurred in the Semdinli district of Hakkari province, near the border with Iraq.
Meanwhile another militant group opened harassing fire on a military patrol in the Yuksekova town of Hakkari, injuring two soldiers.
The injured soldiers were taken to a military hospital. Special units were dispatched to the area with helicopters.