The search for Nancy Guthrie is in its 10th day. Here are the key developments

By Danya Gainor, CNN (CNN) — The search for missing 84-year-old Nancy Guthrie, mother of “Today” show host Savannah Guthrie, has stretched into a second, anguished week, with mounting pressure on investigators and a family grappling with uncertainty. Guthrie was last seen on January 31, before she was apparently kidnapped, disappearing from her secluded home