A car bomb in the eastern Turkish city of Elaziğ killed three officers and wounded 170 people in a police station on Thursday, according to local officials. No group has yet claimed responsibility.

The bombing came hours after a similar attack killed another three people in the same region.

The bombs exploded in the morning as the officer arrived to work.

According to the office of that region’s governor 14 of those wounded are in serious condition, meaning the death toll could rise in the coming hours and days.

The Elazig province has been spared from attacks by Islamic State (ISIS) militants and hadn’t been affected by the war between the Turkish state and the Kurdistan Workers Party (PKK), which reignited last year.

ISIS has not claimed responsibility for any of the deadly attacks it is believed to have been behind in Turkey. The Turkish government regularly blames the PKK for such attacks and the PKK has claimed responsibility for previous attacks on Turkish police forces.

Thursday’s bombing follows a similar attack further east of Elaziğ in the province of Van where a car-bomb attack near a police station killed two police officers, a civilian and wounded 73 others late on Wednesday. No group has claimed responsibility for that attack either.