A man's death and the cause of a house fire are both under investigation in Waterloo.

Firefighters were called to extinguish a blaze that broke out inside a two-story home at 815 E. Ridgeway Ave. around 7:30 p.m. on Tuesday (Jan. 24, 2017). While battling the flames, firefighters discovered a man's body inside the home.

Authorities are trying to determine how the victim died and what sparked the fire.

"Fire damage was limited to an upstairs bedroom," said Lieutenant Troy Luck of Waterloo Fire Rescue.

Authorities have not yet released the victim's name.