Two Turkish soldiers were killed during ongoing operations against the PKK terrorist group in Turkey's southeastern Diyarbakır province on Sunday.
Three PKK terrorist were also killed in the clashes that took place in the province's Lice district, the security sources said.
Turkey's southeast has been the scene of significant military operations since late 2015, as the police and army seek to clear PKK terrorists from urban areas.
The PKK-also seen as a terrorist organization by the U.S. and the EU-resumed its 30-year armed campaign against the Turkish state in July 2015.
Since the group resumed armed campaign in July 2015, more than 1,200 people, including security force personnel and civilians, have lost their lives.