Nine injured in suicide car attack in eastern Turkey
The bomb-laden vehicle blew up in front of the courthouse in Ovacik, around 800km (500 miles) east of Ankara, to state media.
"A PKK suicide bomber detonated a bomb-laden car inside the housing complex where members of the judiciary live," a security source told reporters.
Television footage showed the force of the explosion caused extensive damage to the building.
Tensions are high in Turkey after months of deadly attacks blamed on the outlawed Kurdistan Workers' Party [PKK] and Islamic State group [IS] militants.
A splinter group of the PKK, the Kurdistan Freedom Falcons [TAK], claimed responsibility for a car bombing last week in Istanbul which killed 11 people, including several police officers.
The PKK claimed another deadly bombing last week in Midyat, a town in the Kurdish-majority southeast, which killed six people, including a pregnant police officer.
Two major bombings in Istanbul this year were also blamed on IS-linked militants.
Agencies contributed to this report.