Police have released images of three vehicles of interest as they investigate damage at the site of the Rochester silo murals.
It is understood a fence was cut to gain access to the site about 9.10pm on Friday night.
The vehicles police are interested in are believed to be a Ford Ranger carrying motorcycles in the tray, a Toyota Hilux with a rear canopy, and a Toyota Landcruiser with a large toolbox.
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The vehicles were last seen travelling from Rochester in the direction of Echuca, about 9.30pm that same night.
Police hope to identify the occupants of the vehicles as part of their investigation.
Anyone with information is asked to contact Rochester police station on 5484 1100 or Crime Stoppers on 1800 333 000.
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