Police on Friday morning detained a man suspected of using a knife to injure 22 students and a villager at the gate of a primary school in Central China's Henan province.

Min Yingjun, a 36-year-old villager, attacked students at Chenpeng Village Primary School in Guangshan county in the city of Xinyang at about 7:40 am, said Liu Qingdong, head of the county government's publicity department.

The injured students were sent to three hospitals in the county. Their injuries were not considered life-threatening.