A Chinese man has rammed his car into a group of schoolchildren, injuring 13, state media have said.
The man reportedly tried to cause an explosion by packing his car with firecrackers and a gas tank.
State-run Jinghua Times said the students, in the northern Hebei province, were leaving school for a lunch break when the car hit them.
China has seen several attacks on schools in recent years, including a knife attack two weeks ago.
In the latest incident, three children were seriously hurt and 10 others were treated for minor injuries, Xinhua news agency said.
The Xinhua report said the man's daughter had been murdered three years ago, and he had a history of making complaints to the authorities.
The incident, at Fengning middle school, happened on Monday but was only reported later on Tuesday.
A spate of deadly incidents at schools in 2010 sparked nationwide panic.
Several of the attackers appeared to be men with grievances against the authorities.
Officials characterised them as mentally disturbed men.