Detectives from Wyndham Crime Investigation Unit are investigating a burglary which occurred in Werribee South last month.
Officers have been told a man broke into a business on Aviation Road sometime between 5pm on Friday 23 July and 5.30am on Saturday 24 July.
Once inside the offender searched the property and stole a petty cash tin containing $1000.
The man then left the premises and is believed to have ridden off on a bike.
Investigators have released an image of a man they believe may be able to assist with their enquires.
Anyone with information is urged to call Crime Stoppers on 1800 333 000