A Hoppers Crossing man was one of two men stabbed in Footscray on Monday afternoon.
Maribyrnong Crime Investigation Unit detectives are investigating the incident which occurred on Paisley Street at about 4.45pm on October 9.
It is believed the victims were having a conversation in a store when they were approached by an unknown man who produced a knife from his jacket and stabbed both victims in an unprovoked attack
Police have been told the man then fled the scene on foot.
A 37-year-old Hoppers Crossing man was taken to hospital with serious injuries.
A 39-year-old Greenvale man was treated at the scene for minor injuries.
Investigators have released images and CCTV footage of a man they believe may be able to assist with their enquires.
It is believed that the man is in his twenties, is approximately 175cm tall with dark coloured hair and dreadlocks.
He was wearing a dark coloured baseball cap with white writing, a denim jacket over the top of a dark hooded jumper, dark coloured pants, white shoes and was carrying a dark bag.
Details to: Crime Stoppers on 1800 333 000 or www.crimestoppersvic.com.au.