FBI sending additional agents to assist in search for Nancy Guthrie: Sources A motive remains unknown as the search intensifies for Nancy Guthrie, the mother of "Today" show host Savannah Guthrie.
FBI sending additional agents to assist in search for Nancy Guthrie: Sources A motive remains unknown as the search intensifies for Nancy Guthrie, the mother of "Today" show host Savannah Guthrie.
