Detectives from Altona North Embona are appealing for information after a delivery driver was threatened with a knife earlier this month.
The 47-year-old victim was near the corner of Cowper and Bunbury streets, to make a delivery, when the incident occurred on Wednesday 4 November about 4am.
Police have been told a man approached the delivery driver armed with a large knife and demanded he hand over the keys to the delivery van.
The victim refused to hand over the keys before managing to get away from the man to raise the alarm.
Nothing was stolen during the incident and the victim did not suffer any physical injuries.
Investigators have released an image of a man who they believe may be able to assist with their enquiries.
The man is perceived to be Caucasian in appearance, in his early 20s and was wearing a black jumper with a distinctive white logo and tight white pants.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or file a confidential report at www.crimestoppersvic.com.au