Officials provide an update on the search for NBC host Savannah Guthrie's mother, Nancy, 84, who was was last seen on Saturday at her residence in Tucson, Arizona. #foxnews #breakingnews #missingperson #nancyguthrie #savannahguthrie #tucson #pima #catalinafoothills #billdaly #lawandorder #nationalnews #investigation Subscribe to Fox News: https://bit.ly/2vBUvAS Watch more Fox News Video: http://video.foxnews.com Watch Fox News Channel Live: http://www.foxnewsgo.com/ Download the Fox News app: