A man has died this morning (Friday 25 July) after a fire in Coonamble's Aberford Street.

Police say that emergency services responded at about 2:30am to reports of a blaze inside a granny flat at the rear of a home.

Fire and Rescue NSW crew extinguished the fire and the body of a man was found inside the premises.

"Whilst yet to be formally identified the body is believed to be the 34-year-old occupant," a police spokesperson said.

"Officers from Orana Mid Western Police District established a crime scene and have commenced an investigation.

"About one hour prior to the fire, police were at the location for an unrelated matter."

The fire is not being treated as suspicious.

A report will be prepared for the information of the coroner.

Police are urging anyone with information about the incident is urged to contact Crime Stoppers on 1800 333 000.