Fire crews in Newington are on the scene of a fire at the Burger King on the Berlin Turnpike.
Officials said crews were called out shortly after 5:30 a.m. to a "fryolator" in the restaurant.
Crews were able to get the fire knocked down quickly, but there was heavy smoke in the restaurant.
It is unclear if anyone was hurt or if there were customers in the building at the time of the fire.
The fire marshal and health inspector are investigating and will determine when the restaurant can reopen.
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