Police are investigating a fire at a property in Warring Street, Ravenswood, overnight.

Police were called about 12.10am.  The unit is part of a complex, which is unoccupied.

Initial investigations indicate the fire was deliberately lit.

Police would like to hear from anyone who has information about the incident, or CCTV or dashcam vision in the Warring St area between 11:15pm and 12:15am.

Please contact police on 131 444 and quote OR808701.

Information can also be provided to Crime Stoppers on 1800 333 000 or online at crimestopperstas.com.au. Information can be provided anonymously.