Very little of the structure at 305 Webbs Hill Road in Stamford appeared to remain in a photograph taken by an eyewitness.
The cause was unknown as of Tuesday afternoon. No injuries had been reported as of yet.
UPDATE 4 p.m.: Yankee Gas spokesman Mitch Gross said that there is no natural gas service to that part of Stamford.
"Yankee Gas was requested to come to the scene by the Stamford Fire Department," he said. "This is standard procedure."
The Daily Voice will have more information as it becomes available.
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