Fort Smith firefighters are investigating a fire on the back side of a nonprofit near downtown Fort Smith on Tuesday evening.

The fire, which began shortly after 8 p.m. Tuesday, destroyed two couches behind Golden Rules Clothes Closet, 212 N. Third St., and spread to the back side of the business, Batallion Chief Skip Mathews said. Mathews said a cause of the fire was not determined on Tuesday evening.

Mathews said there is no damage cost in the fire, "other than some scorching to the back of the building." He said the fire did not reach inside Golden Rules.