It happened around 5:00 this morning at the Holiday Retirement Village on Buena Vista Dr. near Target on First Ave.
Fighting through the cold, dozens of firefighters were called to the scene.
Around 40 people were evacuated. Investigators say no fire related injures were reported.
The cause remains under investigation.
Copyright 2017 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.