Wallan police are seeking public assistance regarding a number of graffiti attacks in the town in the early hours of Sunday, September 24.
Between 3am and 4am, at least three offenders have caused damage to over 60 different locations in High, Windham, Bentinck and Queen Streets.
Fences, vehicles, buildings, power poles and signage boards were spray painted.
The graffiti included tags of ESG, SOKENER, ACTSOH, SOKE and REEZIE.
Senior Constable Christopher Mion believes some residents will have knowledge of these attacks and encourages them to speak with police.
Alternatively, a confidential report can be submitted to Crime Stoppers on 1800 333 000 or via www.crimestoppersvic.com.au