POLICE are hunting three men who allegedly tried to break open Myki machines at Corio and Ballan railway stations in October and December.
Two men used hand-held grinders, crow bars and mallets in an attempt to open the machines while the third man kept watch.
The group was unsuccessful but caused tens of thousands of dollars worth of damage.
Police have released images of two men they believe could assist them in their enquiries.
They were wearing masks and gloves, with one man wearing a black hoodie with a light design on the front and dark pants while the second man was wearing jeans, a light coloured hoodie and black and white runners.
Police asked anyone with information to phone Crime Stoppers on 1800 333 000.