The blaze broke out at about 9 p.m. Wednesday, April 20 in West Babylon.
After firefighters extinguished the fire at 225 Van Buren St., the body of an 82-year-old woman was found dead, Suffolk County Police said.
On Wednesday afternoon, police identified her as Ursel Bauer.
A preliminary investigation has determined the cause of the fire to be non-criminal in nature, said police.
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