Detectives from the Arson and Explosives Squad are investigating a fatal fire in Sunbury early this morning.
Emergency services were called to the house fire on Baggygreen Street just after 7am.
A woman, believed to be a resident of the address, died at the scene.
The exact circumstances surrounding the fire and death are still to be determined.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au.