A suspicious fire destroyed Shimmers Bar & Lounge on Cameron Street in Cranbourne in the early morning of Monday 29 January.
At around 4.30am, Fire Rescue Victoria (FRV) responded to a call reporting a building fire.
Firefighters arrived on the scene at 4.36am to find the restaurant fully engulfed by fire with gas cylinders venting inside.
There was no person inside and no injuries occurred.
Firefighters attacked the fire externally and worked to extinguish the hot spots.
A community warning for smoke in the area was issued.
Crews requested power and gas companies to attend the scene.
A building surveyor was requested to attend the scene later.
A crime scene was established and an arson chemist attended the scene later.
At this early stage in the investigation, Victoria Police believe the fire was suspicious.
Anyone who witnessed the incident or has information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at crimestoppersvic.com.au