Whitehorse Crime Investigation Unit detectives are investigating a series of thefts from motor vehicles and subsequent deceptions in Burwood on 2 April, Victoria Police say.
Investigators have been told four cars parked in the vicinity of Springvale Road and the Burwood Highway had windows smashed and credit cards stolen.
A short time later the stolen credit cards were used at a Burwood shopping centre.
The offender is described as aged 20 - 30, perceived to be Caucasian with short dark hair and of a slim to medium build. He was wearing blue and white board shorts, white and black runners and a black hoodie.
Police have released images of a man they believe may be able to assist with their enquiries.
Anyone with information is urged to contact Crime Stoppers.