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GREENSBORO, N.C. -- Investigators are still trying to figure out how a fire started at a Greensboro mechanic's shop early Saturday morning.

Crews responded to the fire at Mario's Tire and Mechanic Shop around 4:45 a.m. It's located at 818 N. Raleigh Rd. Firefighters reported heavy smoke when they made it to the scene; it took seven crews about an hour to get the fire under control.

Firefighters say the flames cost the shop about $25,000 in damage.

There were no reported injuries.

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