A disappearance case in Tucson, Arizona, is approaching the six-month mark. Nancy Guthrie, who was 84 years old at the time, went missing from her home. She was last seen on January 31 and reported missing the following day.

Her daughter, Savannah Guthrie, a co-anchor of the "Today" show, has shared a video with a message appealing to those who may know her mother's whereabouts. Further details about the case and the investigation are available from the source. Federal authorities have released a video related to the disappearance, but specific details about the investigation's progress are not provided in the available information.