Watch: FBI Releases Images of Potential Subject in Nancy Guthrie InvestigationAuthorities have been working around the clock to find Savannah Guthrie's mom Nancy Guthrie. As the search for the 84-year-old stretches into its second week, investigators have finally released security footage of a potential subject of interest seemingly taken from the front door of her Arizona residence, noting it "was recovered from residual data located in backend systems.