The metal storage building behind the business caught fire around 6:30 Wednesday morning. The Indiana State Fire Marshal says there is no reason to believe the fire was intentionally set, but because the building was destroyed, the exact cause will remain undetermined.
Investigators say the fire started in or above an office area, but are unable to pinpoint exactly what happened.
The fire shut down parts of Fourth and Fifth streets for more than three hours and rerouted some school buses. There were no injuries.