The woman found dead Sunday in an east Kennewick gravel yard died of hypothermia, according to a preliminary results of an autopsy.
Pamela Kenny, 59, of Kennewick, was reported missing in December, a release said. She likely died three to 10 days before she was found.
She reportedly had no family in the Tri-Cities.
Environmental conditions make it difficult to determine her exact cause of death but no foul play is suspected, said officials.
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Toxicology and other tests are being conducted and the Benton County Sheriff’s Office continues to investigate.