A piece of equipment catches on fire Wednesday night at the Wrigley Manufacturing Plant in Chattanooga.
Chattanooga Fire Department Spokesman Bruce Garner tells us it was possibly a belt on a piece of machinery that caught fire.
Garner said that caused the room to fill with smoke.
The building was evacuated as a precaution.
One employee at the plant complained of difficulty breathing.
That person was taken to a local hospital for observation.
The cause of the fire is under investigation.