At least 14 police officers were killed and two more wounded by a roadside bomb in Turkey's eastern Igdir province, according to the state-run Andalou Agency.
Security sources not named by the agency said that the attack was carried out by militants from the Kurdistan Workers' Party (PKK).
The officers were escorting customs officials on their way home from work when the bomb was detonated in the village of Hasanhan, on the road which leads to Turkey's border with Azerbaijan.
Twelve officers died at the scene and two more died in hospital, Andalou Agency said.
On Sunday, 16 Turkish soldiers were killed by an IED following an ambush in the southeastern province of Hakkari, Hurriyet Daily News reported.