NEW BOSTON, N.H. (WHDH) — New Hampshire fire officials said the deadly explosion at a house in New Boston on Tuesday was an accident.

Propane gas inside the house has been ruled as the cause of the explosion. The blast leveled the house, which then burst into flames.

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Antonio De Souza, 46, was working inside the house’s basement and was killed in the explosion. No one else was hurt.

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