Police are searching for two men behind robberies in Dandenong, Rowville and Wheelers Hill back in May.
They’ve released CCTV images of men they believe might be able to assist with their inquiries and appealed for public information.
Police allege that two men drove a stolen vehicle to a Wheelers Hill pizza shop about 8.20pm on Thursday 4 May.
Police said the bandits were armed with a metal pole and kitchen knife and stole the cash register.
About 8.30pm, the two men allegedly drove to a Dandenong milk bar on David Street, produced weapons and stole cigarette lighters and tobacco pouches.
Police allege that about 8.40pm the duo drove to a service station on Stud Road, Rowville, and forced their way through the front doors armed with a metal pole and a box cutter.
They stole several items from the counter while a service station attendant locked himself in the staff office.
Police said both men were wearing dark clothing and one wore a balaclava and the other a bandana.
They are described as about 180 to 185 centimetres tall and of thin build.
Information to Crime Stoppers on 1800 333 000.