A police officer wounded in a suicide car bombing in a town near Turkey's border with Syria has died in hospital, raising the death toll to six, Turkish media said.
Turkish authorities said the attack which targeted the police headquarters in Midyat, in Mardin province, was carried out by militants of the outlawed Kurdistan Workers' Party, or PKK.
Two women police officers were among the dead.
Anadolu Agency said a third police officer, who was seriously wounded in the attack, died at a military hospital in the city of Diyarbakir on Thursday.
The PKK has targeted police and military personnel since July, when a fragile peace process between the rebels and the government collapsed.
The group is considered a terror organisation by Turkey and its allies.