A man was shot dead in Greenvale on Tuesday morning.
He was found deceased outside a Buchanan Place home just after 4.30am on March 12.
Paramedics tried to revive the man, who is yet to be formally identified, but he died at the scene.
The exact circumstances surrounding the death are yet to be determined and a crime scene has been established.
Anyone with information can contact Crime Stoppers on 1800 333 000 at www.crimestoppersvic.com.au.
