Three youths were hospitalised and a fourth injured following an affray at the Malmsbury Youth Justice Centre on Tuesday afternoon.
Emergency services minister Jaclyn Symes, speaking to media following the incident, reportedly said a set of keys had been obtained from a guard.
“Police were made aware of the incident about 4pm which reportedly involved a number of youths being involved in an affray inside the facility,” a police spokesperson said.
“It is believed three males were transported to hospital for treatment and a fourth was provided first aid at the scene around 8.30pm.”
Department of Justice and Community Safety responded to the incident at the time with detectives now investigating several reported assaults. The investigation remains ongoing.
There were reportedly no injuries to staff during the incident.