The incident took place around 7:40 a.m. on Monday in Hengshan town within Lianjiang, in Guangdong province,  police was quoted as saying in a statement by CNN, which called the attack an “intentional injury.”

Meanwhile, police have arrested a person in connection with the incident.

The arrested person's surname was identified as Wu.

A source, who requested anonymity, told Global Times that one of the adult victims had hit the assailant's child with a car before, and never given him any compensation.

Police are still investigating the incident.

The motive behind the attack is still not known.