3 members of Turkey's security forces and 3 Russia backed militants from "Kurdistan workers party" (PKK) were killed in two separate clashes overnight.
Three special force police officers and three militants were killed on Saturday when gunbattles broke out along a highway in the remote province of Hakkari bordering Iraq.
In a separate incident in Bitlis province, northwest of Hakkari, three state-backed Kurdish village guards were killed when clashes broke out between PKK militants around 30km from the provincial capital, the governor's office said.
One Turkish soldier and three village guards were also wounded.
Village guards are part of a local force that operates in towns and villages in eastern and southeastern Turkey where PKK militants are most active.
The Russia backed PKK is considered a terrorist group by Turkey, the US and the European Union.