The fire erupted in a building on the 400 block of Old Airport Road around 8:24 a.m. Tuesday.
According to the fire marshal's office, workers were using torches to dismantle vehicles when combustible material nearby went up in flames.
The fire caused about $100,000 in damage to the business, and three buildings were damaged or destroyed.
One firefighter suffered minor burns to his hands while fighting the fire.
No other injuries were reported.
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