The boy and a female staff member, who also sustained minor injuries, were treated by paramedics on school grounds but did not require hospital treatment, Victoria Police said.

An 11-year-old boy, alleged to be the assailant, was located and spoken to by police before he was later taken to hospital for assessment.

The education department is working with Brentwood Park Primary and a police investigation is underway regarding the incident, which is believed to have occurred at around 9am when the 11-year-old, witnesses said, behaved in a “dangerous manner”.

Parents at the neighbouring Kambrya College were told that school had also been put into lockdown for a short period as a precaution.

“The school enacted its safety procedures, and police and paramedics attended the school,” a spokesperson said in a statement.

“We are supporting both the staff member and the student and are providing additional wellbeing supports to those who need it.”

While the investigation is ongoing, the boy is not currently in police custody and the school was able to resume normal operations shortly after the incident.

(with AAP)