Police activity ramped up late Friday night at a location about two miles from Nancy Guthrie's home in Tucson, Arizona, nearly two weeks into the search for the missing 84-year-old. It was unclear what drew law enforcement to the site. Pima County Sheriff Chris Nanos told CBS affiliate KOLD that the scene is connected to the Nancy Guthrie case, and they are "actively working a lead. I cannot say anything else."