Police are investigating the circumstances surrounding the death of a man in Craigieburn on Wednesday.
Police have been told a 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.
Police are working to establish the circumstances surrounding the incident.
Two men are currently in custody.
Anyone with information can contact Crime Stoppers on 1800 333 000 or at www.crimestoppersvic.com.au.