Savannah Guthrie's Mother Nancy Guthrie Missing in Arizona

Pima County Sheriff Chris Nanos launched a criminal investigation into the disappearance of Nancy Guthrie, the 84-year-old mother of Today host Savannah Guthrie, after classifying the case as a potential abduction.Authorities including the FBI and USA Customs and Border Protection are searching the Tucson area with drones and helicopters for the missing woman who requires life-sustaining medication.Savannah Guthrie returned from her assignment in Italy to Arizona and is currently under security protection while investigators canvas her mother's neighborhood for evidence.