A FIREBUG has doused a vacant Dandenong North house in petrol and set it alight.
Fire crews were called to the Gladstone Road address about 10.40pm on Tuesday 5 April.
Greater Dandenong CIU Detective Senior Constable Bree Jarvis said someone was seen fleeing the scene in a late-model white sedan parked in First Avenue.
She said the damage bill was unknown, but there was smoke and fire damage throughout.
Call Crime Stoppers on 1800 333 000 with any information.