Homicide Units Join Search for Savannah Guthrie's Missing Mother

Homicide detectives joined the search for Nancy Guthrie after investigators discovered concerning evidence at her Arizona residence.The 84-year-old mother of television anchor Savannah Guthrie was reported missing from her Tucson home on Sunday following her last known sighting on Saturday evening.Multiple agencies including the FBI are utilizing drones and aircraft to locate the vulnerable adult while forensic teams process the residence.