Police are investigating a deliberately lit fire which destroyed two vehicles and damaged a house in Acton early Saturday morning. 

Around 2:15am, emergency services were called to a report of two vehicles on fire in the backyard of a property on Nelson Street. 

As a result of the fire, both vehicles were destroyed and a nearby house and fence were damaged. 

Fire Investigators have determined the fire was deliberately lit. 

Anyone who has dash cam or information in relation to suspicious activity in the area around the time is asked to contact police on 131 444 or Crime Stoppers anonymously at crimestopperstas.com.au or on 1800 333 000.