Yarra Crime Investigation Unit detectives are investigating following an aggravated burglary in Richmond last month. .
Detectives believe an unknown man gained entry to a secure car park of a Oxford Street apartment building about 6.30am on 3 July.
Once inside the man attempted to gain entry to multiple vehicles with no luck before entering a foyer.
A resident of the building confronted him in the foyer and managed to take a photo of the man.
The man threatened the resident with a knife before fleeing the scene empty handed.
The victim was unharmed.
Investigators have released images of a man who they believe can assist with their enquiries.
He is perceived to be African in appearance and was wearing a green jacket, a Tommy Hilfiger cap and was carrying black satchel type bag.
Anyone who recognises the man or with any information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au
