Article continues below advertisementThe search for Savannah Guthrie's missing mother, Nancy Guthrie, is now entering its ninth day, and authorities say they are actively following "new leads" as the investigation continues.Nancy, 84, remains missing more than a week after she was last seen, but law enforcement officials confirmed that progress is being made. The FBI is now handling "all aspects related to any ransom note(s) or communications involving the Guthrie family.