Detectives from Dandenong Embona continue to investigate an armed robbery which occurred at a service station in Keysborough on 15 November.
Officers have been told that two men armed with a knife entered the Cheltenham Road business around 9.30pm.
The bandits threatened the lone attendant and demanded the he hand over cash.
One of the robbers went with the attendant to the counter to collect the cash while the other stood guard at the door.
A customer entered the store and confronted the two offenders who then fled with a small quantity of cash.
They were last seen getting into a white van which then drove south along Chandler Road.
Both offenders are perceived to be Indian and wore dark clothes and hooded tops in an attempt to disguise their identities.
Police have released images and CCTV of two men that they believe may be able to assist with their investigation.