A car bomb blast injured 23 people near a police building in south-eastern Turkey, local media reported.
Both civilians and police personnel were wounded in the explosion in the Cinar district of Diyarbakır province, The Daily Sabah newspaper reported.
Parts of Diyarbakir province have seen frequent clashes between government forces and Kurdish militants.
The police headquarters and surrounding buildings were damaged in the blast, the report said online, with photographs showing the destroyed front of a several-storey structure.
Attackers first detonated the bomb, and then fired on security forces at the scene, Daily Sabah and Firat news agency reported.
There were reports of clashes in the area after the attack, the pro-Kurdish Firat reported.