The more than 20 customers and employees escaped without injury.
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The chief said the malfunction sent fire to the roof. He could not put a dollar estimate on the damage.
The location is closed until further notice, the chief said.
Crews are on the scene of a structure fire reported in the kitchen at the Burger King in the 300 block of East National Road.
The incident was dispatched about 12:40 p.m. and there is word about an evacuation. No injuries have been reported.
Traffic on East National Road is being blocked until further notice.
We have a crew on the way.
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