Updated

A man in northern China has rammed a car loaded with a gas tank and firecrackers into a group of middle school students, injuring 13.

The official Xinhua News Agency says the man attempted to set off an explosion after running down 23 students at Fengning No. 1 Middle School in northern China's Hebei province on Monday. The man is in police custody.

Xinhua did not identify the man in its report Tuesday, but said his daughter was killed in a suspected murder case three years ago and he has a history of lodging complaints with authorities. Xinhua said the man did not act under the influence of alcohol or drugs.

China has had a half-dozen school attacks in less than three years.