Ballarat Crime Investigation Unit detectives are appealing for public assistance as they continue to investigate a suspicious fire in Wendouree last month.
It is understood two males forced the doors open at a gym on Howitt Street about 3.20am on Saturday, 25 May.
Police were told they poured accelerant inside, at the front of the building and in the carpark, before lighting it.
No one was inside the gym at the time of the incident.
The large fire in the reception area caused significant damage.
The two males fled on foot and headed east on Howitt Street.
Investigators have released CCTV and images of two men they believe may be able to assist with their enquiries.
One man is described as being of a tall, stocky build. He was wearing a hoodie, clack gloves, shorts and Nike runners.
The description of the second man is unknown.
Police are working to establish the exact circumstances of the fire and investigations are ongoing.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or www.crimestoppersvic.com.au
