India, Feb. 10 -- The search continues for Nancy Guthrie, the mother of Today show co-host Savannah Guthrie, who has been missing since January 31.

Authorities believe the 84-year-old was taken against her will from her home outside Tucson, Arizona. Investigators confirmed the family received a ransom note demanding $6 million in Bitcoin, warning that Nancy could be harmed if payment was not made by 7 p.m. EDT on Monday. While the family agreed to pay, the deadline has since passed.

Hours before that deadline, Savannah Guthrie turned to social media, urging the public for help as the search stretched into another week.

"I wanted to come on and share a few thoughts as we enter into another week of this nightmare," she said in the video....