The fire was discovered before 7:30 a.m. Saturday in a ranch home in Waterloo, just west of Omaha.
Waterloo Volunteer Fire Department Chief Travis Harlow says black smoke was billowing from the home when firefighters arrived. The man, who was alone in the house, was found dead in the living room.
Harlow says the man has not yet been identified. Investigators are working to determine what caused the fire, which burned a hole through the floor of the house but was quickly contained.
Harlow says an autopsy would be done to determine the cause of the man’s death.