A suspicious fire occurred on Dalton Road, Thomastown on Tuesday morning.
Fire Rescue Victoria (FRV) responded to a building fire in Thomastown at about 4.15am.
The first FRV crew arrived in under six minutes to find a fire on the ground floor of a three storey industrial building.
Firefighters donned breathing apparatus and attacked the fire as it engulfed the entire ground floor restaurant, managing to bring it under control by 04:42am, 20 minutes after arriving on scene.
The fire was contained to the ground floor of the building.
A total of 29 firefighters attended the scene.
FRV conducted a search of the premises and can confirm no-one has been found.
The fire has been deemed as suspicious and will be investigated by Victoria Police who were also on scene.