(CNN) — A truck hit 31 cars and killed at least 13 people after the driver lost control Saturday night at an expressway toll booth in northwestern China, Chinese state media reported.
More than 30 people were injured in the accident, in the city of Lanzhou. Rescuers pulled all trapped passengers from cars and police were investigating the cause of the deadly accident.
Police detained the bus driver and were investigating the case.
In a non-road accident, authorities in central China said a factory that makes heat-insulation material exploded Saturday morning in Lankao county, Henan province, due to a propane leak. Eight people were killed and one was injured, authorities said.
The accidents follow a dramatic October 28 highway crash in southwestern China that killed 15 people.
Video from an on-board camera showed a woman attacking the driver after he missed her stop, causing him to lose control of the vehicle.