Istanbul: One police officer was killed and 13 people were wounded on Sunday in an attack in front of a police headquarters in Turkey's southeastern city of Gaziantep, the provincial governor was quoted by broadcaster CNN Turk as saying.
Nine of the wounded were police officers, Ali Yerlikaya, governor of Gaziantep province, which borders Daesh-controlled territory in Syria, said, according to CNN Turk.
The explosion was caused by a car bomb and had been followed by sounds of gunfire, according to NTV.
TV pictures showed chaotic scenes outside the police headquarters as ambulances rushed to help wounded lying on the ground.
One of the main cities of Turkey's southeast, Gaziantep has a population of around 1.5 million and is also a major hub for refugees who have fled the war in neighbouring Syria.
The attack comes with Turkey on edge after two deadly attacks in Istanbul this year blamed on jihadists and a pair of attacks in Ankara that were claimed by Kurdish militants and killed dozens.
However, there was no immediate indication over who could have carried out the attack in Gaziantep.
Police security has been stepped up across the country on Sunday as Turkish leftist and labour activists prepare to celebrate May Day, an event that often ends in clashes with security forces.
