Investigators say duct work under a home in the 2300 block of Saint Joseph Avenue caught on fire.
Three people were inside the home sleeping, but were awakened by their smoke alarm.
Officials tell us the home suffered minor damage.
Crews were able to put out the fire in about 10 minutes.
Copyright 2015 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.