Six members of the outlawed Kurdish Workers' Party (PKK) on Saturday surrendered to Turkish security forces in Habur near Iraq, the semi-official Anatolia news agency reported.
The report said that the six PKK rebels entered Turkey from northern Iraq through Habur border crossing and surrendered to the security forces.
Earlier on Saturday, Turkish security forces killed seven PKK militants in clashes in southeastern province of Mardin, according to a statement issued by Mardin Governor's Office.
The statement said that a group of PKK militants fired at gendarmery forces who were patrolling.
The security forces also seized some weapons, ammunition and documents, said the statement.
More than 37,000 people have been killed since the rebel group took up arms against Ankara for an independent Kurdish state in the Kurdish-dominated southeastern Turkey in 1984.
The PKK launched a series of attacks after it called off a five- year unilateral ceasefire in June 2004.
The PKK is listed as a terrorist organization by Turkey, the European Union and the United States.
An estimated 5,000 PKK rebels are holed up in the mountains of mainly Kurdish northern Iraq.