Unit fire being treated as suspicious

Fire Rescue Victoria firefighters arrived on the scene within four minutes and the incident was deemed under control at 5.49pm.

Police said there was extensive damage to the backyard, and also smoke damage inside the house.

No-one was home at the time of the fire.

The intersection of Vaughan and Archer Sts was restricted to one lane of traffic while firefighters extinguished the fire.

Police said the fire was being treated as suspicious.

Anyone with information or dashcam or CCTV footage should contact Crime Stoppers on 1800 333 000 or make a report online at crimestoppersvic.com.au