Echo Taskforce detectives arrested two men following a suspicious fire at a Laverton business early this morning.
Police were on patrol when they spotted a vehicle repair building on fire on Triholm Avenue just after 3.30am.
It is alleged two male offenders poured accelerant and set a number of vehicles and the premises on fire when one of the offenders also caught alight.
Officers extinguished the man and arrested both men on scene.
A 22-year-old Tarneit man was taken to hospital with non-life-threatening injuries where he remains under police guard.
A 19-year-old Wyndham Vale man has been charged with criminal damage by fire (arson) and theft of motor vehicle.
He will face Melbourne Magistrate's Court tomorrow.
The investigation remains ongoing.
