A car bomb attack in the largest city in Turkey’s mainly Kurdish southeast region killed eight people Friday, hours after authorities detained at least 12 pro-Kurdish legislators for questioning in terror-related probes, the Associated Press reports.

Prime Minister Binali Yildirim said two police officers, a technician and five civilians died in the attack near a building used by the riot police. Up to 100 people were hurt in the blast but only seven of them remain in hospital, he said.

Yildirim also said one of the assailants was “caught dead” but did not provide details.

The Diyarbakir governor’s office said the outlawed Kurdistan Workers’ Party, or PKK, had claimed the attack, which the state-run Anadolu Agency said was carried out with a minibus laden with a ton of explosives.