Picture used for illustrative purposes only.
Liu Xiaohui was arrested at 10:50pm on Wednesday, about 12 hours after the morning attack, the Anfu county police said in a statement. He had fled and gone into hiding, the statement said.
Police did not provide any information on the identity and ages of the victims.
China's Global Times newspaper reported that at least one victim was a child and that the attacker is believed to have been armed with a knife.
China upgraded security at schools following a spate of of deadly attacks in recent years attributed largely to people bearing grudges against society or with mental illnesses.
China does not allow private gun ownership, so most such attacks are carried out with knives, homemade explosives or gasoline bombs.
Around 100 children and adults have been killed and hundreds injured over the past decade in apparently uncoordinated "lone wolf" attacks in which the motive was unclear. The mostly male assailants were either killed, ended their lives or were put on trial and executed.
Acts of violence against China's youth resonate especially strongly due to the country's chronically low birth rate, partly due to decades of population control policies.Associated Press
The blast occurred on Thursday at the Chenjiagang Industrial Park in the city of Yancheng, in Jiangsu province, and the fire was finally brought under control at 3.00am on Friday (1900 GMT), state television said.
The state-run People's Daily said rescue work is ongoing at the site in Shuicheng county, Guizhou province, where a thick torrent of mud buried 22 houses in the landslide on Tuesday.
Two people have reportedly been stabbed to death in the Canadian city of Quebec. The attack took place around Parliament Hill in the historic Old Quebec neighbourhood.
During the meeting, they discussed friendship relations and various aspects of cooperation and coordination between the UAE and the United States of America, especially in the defence and military sectors.
The Philippine Overseas Labour Office in Dubai (POLO-Dubai) which has been upgrading its digital services and which has been on road tours with the Philippine Consulate General in Dubai (PCG-Dubai) to the Northern Emirates, is going for another outreach programme on September 18
The Dubai Court of Appeal commuted a judgment of three years imprisonment issued by the Criminal Court against an Asian woman and a gang from an Eastern European country to 6 months in prison, while upholding the fine of Dhs29,800 and the deportation after serving the terms.