A shopkeeper at a Wyndham Vale discount store was threatened with a knife by an offender who demanded cash last month.
Police have been told a man entered the store at Wyndham Square shopping centre on Greens Road around 2.30pm on Monday February 8.
He browsed in the store for 10 minutes before taking a set of screwdrivers to the front counter.
When the shopkeeper asked for payment the man produced a knife and demanded the cash.
The victim opened the till and the offender stole a quantity of cash before fleeing the centre, heading towards Ambleside Avenue.
Detectives have released images and CCTV of a man who they believe may be able to assist with their enquiries.
Altona North Embona detectives are investigating.
Anyone with information about the armed robbery is urged to contact Crime Stoppers on 1800 333 000 or visit www.crimestoppersvic.com.au
