The homeowner, Guiseppe Cardillo, who was outside at the time, was treated by emergency personnel at the scene and taken to a hospital for observation.
The explosion was felt over a 2-mile area, the Stamford Advocate reported, and one of Cardillo's neighbors, Charlene Heffernan, said she'd never heard such a loud noise.
"I thought a plane hit my house," Heffernan said. "My house shook from the top down."
Another nearby house sustained smoke damage and debris was sent flying across the area, the newspaper said.
Investigators were trying to determine what triggered the blast that wiped out the two-story, 6,000-square-foot, six-bedroom home that was built in 1984.
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