BOISE, Idaho (KBOI) -- An elderly woman was sent to the hospital after her house on Nez Perce went up in flames Tuesday night.
Boise firefighters said the woman suffered leg burns, but didn't believe they were life-threatening.
Fire crews called the fire a flash fire: a fast moving, intense fire. It was hard for crews to fight because of the large flames and the large amount of clutter inside.
Everything had to be removed from the home before they could make sure the fire was fully extinguished, and before investigators could go in to figure out a cause.
Investigators believe the fire started by the build-up of propane gas from a heater that was being used inside. They want to remind homeowners to use appropriate heating devices.
The fire was held back from houses next door.