Investigators searching for Nancy Guthrie are making progress nearly 100 days after her disappearance, according to the sheriff leading the case. Pima County Sheriff Chris Nanos told Fox News Digital on Friday authorities are moving closer to solving the suspected abduction of the 84-year-old from her home in the Catalina Foothills in Arizona . Guthrie is the mother of Today co-host Savannah Guthrie . The case has drawn national attention because of Guthrie’s connection to her daughter and