Eight Turkish soldiers were killed in an explosion in Turkey's southeastern Hakkari province on Wednesday, Reuters reports.
The sources said Kurdistan Workers Party (PKK) militants were believed to be behind the blast.
The attack came days after Turkish Prime Minister Recep Tayyip Erdogan hinted at tougher military action against rebels after the end of the holy Muslim month of Ramadan, saying the country was at the end of its tether.
More than 30 Turkish soldiers have died in intensified attacks since July. The clashes have also left about 10 rebels dead.
