Six people have been killed and one injured in an early morning attack outside a kindergarten in southern China, according to Lianjiang city police.

The incident took place around 7:40 a.m. on Monday in Hengshan town within Lianjiang, in Guangdong province, said police in a statement, which called the attack an "intentional injury."

Police arrested the suspect, a 25-year-old man surnamed Wu, shortly after at around 8 a.m. The case is now under investigation, according to the statement, which did not identify the victims, or give their ages.

Video footage from the scene, which circulated online and was then obtained and distributed by Reuters news service, show the assault took place outside a kindergarten.

The video shows concerned residents passing by the site of the attack, where a sign outside reads "kindergarten," and police tape being put up.

CNN has reached out to local officials for information on the victims.