Homicide Squad detectives are investigating the circumstances surrounding an assault in Tooradin last month which has claimed the life of a teenager.
The 17-year-old passed away in hospital on Saturday 10 April following an assault at a party in Station Road on Sunday 21 March about 2.30am.
Detectives are investigating reports a group of men became involved in an incident with the teen which escalated to a physical altercation.
The Cranbourne North boy was taken to hospital at the time with life threatening injuries.
The investigation remains ongoing.
Anyone with information is urged to call Crime Stoppers on 1800 333 000 or log onto www.crimestoppersvic.com.au.