It happened at a building on 9th and Willow Streets.
Dispatchers tell us the building was vacant and owned by Good Samaritan Hospital.
The building was fully engulfed, but firefighters had the blaze put out by midnight.
There's no word yet on what caused the fire and there no injuries were reported.
Copyright 2015 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.