One civilian was killed and three Turkish police wounded on Friday when suspected Kurdish militants opened fire on a cafe in the southeastern city of Diyarbakir.

One civilian was killed and three Turkish police wounded on Friday when suspected Kurdish militants opened fire on a cafe in the southeastern city of Diyarbakir, security sources said.

A small group of police were in a cafe in the centre of Diyarbakir specializing in tripe soup, a popular breakfast staple, when suspected Kurdistan Workers' Party (PKK) militants opened fire.

Three police were wounded and a young male civilian, named as Seyhmus Sanir, 22, who was working as a waiter in the cafe was killed, the security sources told AFP.

The police, one of whom was seriously wounded, are being treated in hospital.

One police officer who was wounded lay prostrate on the ground. Police reinforcements who arrived in flak jackets brandished AK-47s in case of a follow-up attack.

Diyarbakir, the biggest city in the Kurdish-dominated southeast of the country, has seen a spate of deadly attacks in the last weeks aimed at the Turkish security forces.