A 40-year-old man has been taken into custody and is assisting police with their enquiries in relation to a fatal house fire at Glenorchy this morning.

Police and emergency services were called to the scene in Sanders Street shortly before 7am, after it was reported the home was fully alight.

Sadly, the body of a person was located inside the residence.

A crime scene was declared.

The man was taken into custody about 1.45pm.

As part of the investigation, a second crime scene was declared in Park Street, North Hobart after a vehicle was found on fire.

Police believe both fires are linked.

Anyone with information about a Blue Mazda 6 sedan – registration L78BI – in the area of Park Street, North Hobart about 7am Friday, or dashcam footage of the car travelling between Glenorchy and North Hobart at that time should contact police on 131 444 or Crime Stoppers anonymously via crimestopperstas.com.au