BEIJING (AP) -- Seven people were killed and 59 injured in an explosion Thursday at the front gate of a kindergarten in eastern China as relatives were picking up their children at the end of the school day, local officials said.
The blast at the Chuangxin Kindergarten in Fengxian, which struck at 4:50 p.m., was under investigation, the Xuzhou city government in Jiangsu province said on its microblog.
It wasn't immediately clear whether the explosion was deliberately set or the result of an accident.
The official newspaper Global Times reported on its website that the incident was caused by the explosion of a gas cylinder at a roadside food stall, citing a witness identified only by the surname Shi. The blast sent people flying several meters (yards) into the air, Shi was quoted as saying.
Kindergartens in China have been targeted before in apparent revenge attacks carried out by mentally ill people or those bearing grudges against their neighbors and society.