Investigators in northeast Iowa are searching for the cause of a deadly fire.
The fire started around 4:30 Monday morning at a home in Dubuque. A neighbor noticed the home was on fire and called 911.
When firefighters arrived they say there were heavy flames and the second floor had collapsed onto the first.
The body of an older man was found inside. His name has not been released.
Investigators are still working to determine the cause of the fire.