The three members of the banned Kurdistan Workers' Party (PKK) were killed late Sunday and the soldier died Monday in the fighting around the Cukurca locality, the sources said.

The military launched a renewed military operation in the region four days ago.

A civilian was killed and another wounded on Saturday when a rebel mine exploded Saturday a Kulp, near the regional capital of Diyarbakir.

The PKK declared a truce for the Ramadan Muslim holy month but this was rejected by the Turkish authorities.

On Sunday, Prime Minister Recep Tayyip Edrogan said the fight against the PKK, which is on US and EU terrorist blacklists, would go on until the separatist fighters lay down their arms.

The PKK has been fighting for self-rule in Turkey's mainly Kurdish southeast and east since 1984, in a conflict that has claimed some 45,000 lives.