The sources who spoke on condition of anonymity due to restrictions on talking to the media said PKK extremists opened fire on Deryan Aktert, AK Party's district chairman in Dicle while he was at his workplace.

An investigation was launched to hunt the extremists after the attack.

The PKK is listed as a extremist organization by Turkey, the U.S. and the EU. It resumed its 30-year armed campaign against the Turkish state in July 2015.

Since then, PKK extremist attacks have killed more than 600 security personnel and also claimed the lives of numerous civilians, including women and children, while more than 7,000 PKK extremists have been killed in army operations.