Bendigo Crime Investigation Unit detectives are appealing for public assistance following two separate fires in bushland east of Bendigo on Boxing Day in December last year.
Emergency services were called to two separate bush fires near Munroe Road in Mandurang just before 7.30am on 26 December.
Emergency services were also called to a fire later that evening about 5.45pm in the Wellsford Forest, east of Bendigo.
No one was injured and the fires were quickly extinguished.
The fires are being treated as suspicious and investigators believe the fires were deliberately lit.
Detectives are keen to speak to anyone that may information or anyone that may have seen any suspicious activity in these areas at the time.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au