Provincial police are looking into what caused the death of an individual at Long Lac #58 First Nation.
Greenstone OPP say they were called to a home on Friday to reports of an unresponsive 26-year-old, who was pronounced dead the scene.
They have not stated the sex of the person.
An autopsy is scheduled this week.
Greenstone OPP, along with the forensic unit, as well as the Northwest Region Crime Unit, and the chief coroner are involved in the investigation.