Investigators Determine Cause of Death for Yakama Nation Woman - NBC Right Now/KNDO/KNDU Tri-Cities, Yakima, WA |

Investigators Determine Cause of Death for Yakama Nation Woman

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MISSION, Ore. - Umatilla Tribal Police have determined the cause of death for a Yakama Nation woman found Thursday near Mission.

Autopsy results show Angela Billy drowned in the Umatilla River. Investigators say they found no signs of injury or assault.

Two horseback riders searching for Billy found her body Thursday evening. Family members say she went missing on May 22nd.

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