New Delhi, July 28 -- "Today" show host Savannah Guthrie has issued an emotional public appeal as authorities in Arizona continue searching for her 84-year-old mother, Nancy Guthrie, who has been missing since late January.

In a video shared on Instagram on Monday (July 27), Guthrie addressed those she believes may have information about her mother's disappearance, urging them to come forward and help bring the case to a close.

"I'm coming on today with a very specific message. It has been months since our mom was taken from us. Our family is in agony. We are in a nightmare that will not end," Guthrie said.

The television host said the pain of her mother's disappearance has not eased despite months of investigation.

"Nothing about our...