Nancy Guthrie, Arizona and Savannah
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Arizona's Pima County Sheriff's Department says they're aware of "possible ransom note(s)" regarding the investigation into Nancy Guthrie's disappearance after TMZ reported receiving a demand for millions in Bitcoin.
"They are a family and they lean on each other," Pima County Sheriff Chris Nanos told PEOPLE
Savannah Guthrie is speaking out as authorities continue to investigate the disappearance of her 84-year-old mother.