At least two vehicles and a Myki ticket machine were reported damaged at the Longwarry Train Station overnight on Sunday, November 17.
Police believe the offender was looking for cash.
They reported windows were smashed on two vehicles in the carpark. A third vehicle, which left before police arrived, was possibly damaged.
The station's Myki machine also was damaged.
On the same night, police said two registration plates - ANA 464 - were reported stolen from a vehicle parked on a nature strip in adjoining Flinders Rd.