Article continues below advertisementThe man in charge of the search for Savannah Guthrie's missing mother "understands" why some think her brother-in-law should be looked at as a suspect, but warns against making potentially harmful assumptions. Tommaso Cioni, the husband of the Today star's sister, Annie Guthrie, continues to face claims that he's responsible for their 84-year-old mother Nancy's disappearance, as he was reportedly the last person to see her alive on January 31.