Police were called to Bridge Inn Road, Mernda about 5.50pm on 6 March after reports of a group of males fighting.
When emergency services arrived they located a male with injuries.
He was treated at the scene by ambulance crews but could not be revived.
Homicide Squad detectives are headed to Mernda and the investigation is ongoing.
Anyone who witnessed the incident or with footage is urged to contact Crime Stoppers on 1800 333 000 or report at www.crimestoppersvic.com.au
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