The Pima County Sheriff’s Department is responding to a number of recent headlines surrounding the Nancy Guthrie investigation. Police say they are aware of a tip that led a Mexican group to search for a grave, but have not been contacted by authorities regarding any development. They also acknowledged they arrested three you tubers for disturbances outside Guthrie’s home. And finally, a kidnapper at large in the Tucson area, just 15 minutes from Guthrie’s house, has nothing to do with the missing 84-year-old mother and grandmother.