Kurdish militants killed two police officers in a car bomb attack on a checkpoint in southeast Turkey on Sunday, as authorities imposed a curfew in the region's largest city Diyarbakir where clashes broke out, security sources said.
Turkish forces backed up by helicopters and commandos shelled a mountainous area where the Kurdistan Workers Party (PKK) fighters had fled after the checkpoint attack in Sirnak province, killing six of them, the sources added.
A police officer was reported killed in another confrontation.