Firefighters responded to a three-alarm blaze at Southtowns Fireplace on Camp Road in Hamburg early Thursday.
No injuries were reported.
The fire at 4307 Camp Road was reported shortly after 5 a.m.
The origin of the fire was undetermined as of late Thursday.
"There was so much damage, and because of the roof collapse, it was unsafe to do a thorough investigation," said Capt. Kevin Trask, of the Hamburg police.
Lake shore fire co Fire Chief Matthew Giacomini at 3 alarm fire on Camp Road at Southtowns Fireplace
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The southbound lanes of Camp Road (Route 75) were closed between Big Tree and Durham roads for a few hours, according to the Niagara International Transportation Technology Coalition.
No damage estimate was immediately available.