ANKARA, June 9 (Xinhua) -- The death toll of a bombing attack in southeast Turkey on Wednesday has risen to six, Dogan news agency reported on Thursday.
The victims include three police officers, one of whom died of his injuries in hospital, and three civilians.
About 30 others were injured in the car bombing that hit a police headquarters in Midyat, in the southeastern province of Mardin.
Prime Minister Binali Yildirim said the outlawed Kurdistan Workers' Party (PKK) was behind the attack.
"This was not a surprise to us. Their circle is slowly tightening. The fight against terrorism is tough and requires determination," Yildirim told media.
Over 470 members of Turkish security forces and thousands of PKK members have been killed in confrontations inside Turkey and in northern Iraq since last July.
More than 40,000 people have lost their lives in clashes with the PKK since 1984, when the group first started anti-government attacks.
The PKK is listed as a terrorist organization by the United States, the European Union and Turkey.