Under investigation is the mysterious death of a Sabine County man who died in a house fire. Deputies are wanting to know if it was suicide or involved foul play. The name of the man isn't being released. His body was found late Wednesday afternoon in his burned out home in the Pendleton Harbor Subdivision on the banks of Toledo Bend. Authorities responded to a domestic disturbance at the home near the Texas-Louisiana state line on Monday. The man's wife and children had left the home after the fight. An autopsy has been ordered and the state fire marshal is looking into the cause of the house fire.