Death toll from the car-bus collision in north China's Inner Mongolia Autonomous Region has risen to 12, said local authorities on Sunday.
Three people who were seriously injured died in hospital on the early morning of Sunday, confirmed the regional administration of work safety.
The accident happened at about 5:20 p.m. when an unregistered car crashed with a bus on a section of a national road in Arun Banner, Hulun Buir City.
Nine people were found dead at the scene. Thirteen others were injured, including four in critical condition.
A team formed by the public security, transportation, health and civil affairs authorities is taking care of the relatives.
Cause of the accident is under investigation.
