ST. CLOUD - The St. Cloud Fire Department is investigating an arson fire.

Fire crews were called to Tom Windshield Repair on Fifth Street North at about 10:15 p.m. last (Sunday) night.

A sleeping unit from a semi parked in the front of the building had been set on fire.  The fire  also burned a garage door, and got into the building.

There was about $30,000 in damage.

A reward of up to $2,500 is being offered.  If you have information, you can call the arson hotline at 1-800-723-2020.