Article continues below advertisementA private investigator believes Nancy Guthrie was kidnapped by a drug cartel.California-based inspector Bill Garcia recently gave his take to Border Report, saying he thinks Savannah Guthrie's 84-year-old mother was abducted in a "money-making venture by people involved with a cartel."Article continues below advertisementNancy Guthrie Was Reported Missing on February 1Source: @savannahguthrie/InstagramNancy Guthrie was last seen at her Tucson home on January 31.