A car bomb has exploded outside the ruling Justice and Development Party (AKP) headquarters in the eastern Turkish city of Van, leaving dozens of people wounded.
A statement by the governor's office said 48 people were injured, including 46 civilians and two police officers, when the explosion hit the center of city near the AKP's offices and the governor's building.
The governor's office said the bombing was carried out by the outlawed Kurdistan Workers Party (PKK).
Since the collapse of the cease-fire between Turkey and the PKK last summer, more than 600 Turkish security personnel and thousands of PKK fighters have been killed.
Television footage showed ambulances rushing to the scene and water cannon being used to put out a fire caused by the explosion.
The blast took place on the first day of the Muslim holiday of Eid al-Adha.