Homicide Squad detectives are investigating the circumstances surrounding the death of a man in Craigieburn on 15 February.
Investigators have been told a 24-year-old Craigieburn man was seen attempting to break into a car in Hothlyn Drive about 2.30pm.
The man was confronted by residents and a short scuffle ensued.
Emergency services arrived a short time later and police arrested the man.
He was treated by ambulance crews but became unresponsive and died at the scene.
A crime scene has been set up while detectives work to establish the circumstances surrounding the incident.
Police are awaiting the results of a post mortem to determine cause of death.
Two men from Craigieburn, a 72-year-old and a 33-year-old, were arrested at the scene but have been released pending further enquiries.
Anyone with further information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.auExternal Link