Casey Crime Investigation Unit detectives are seeking assistance from the public to help identify suspects for an armed robbery in Endeavour Hills earlier this year.
Investigators were told three men approached the two teenage victims on Hallam North Road near Thomas Mitchell Drive on Sunday 27 September about 6.45pm.
It is believed the men spoke to the victims while one man produced a hammer and demanded the victims' hand over a Bluetooth speaker and a bike.
The victims handed over the speaker and the men fled on foot on Thomas Mitchell Drive.
The victims were not physically injured during the incident.
Police have released images of people and a car as well as a photofit they believe may be able to assist them with their investigation.
Anyone with information or who witnessed the incident is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au
Leading Senior Constable Rohan Imms
