Nancy Guthrie, mother of "Today" show host Savannah Guthrie, has been missing since February 1. Here's what we know about the case.

Savannah Guthrie has been absent from the 'Today' show amid the search for her mother, who was last seen on Jan. 31

NBC used to promote the cast of the “Today” show as “America’s first family,” and this agonizing week has shown why.

Craig Melvin, Sheinelle Jones, Jenna Bush Hager and more NBC anchors have been reporting on the crisis as Guthrie remains off air.

NBC is taking no chances with their Today show talent, tightening security following the abduction of co-host Savannah Guthrie's mom in Arizona, RadarOnline. com can reveal.

NBC “TODAY” show co-anchor Savannah Guthrie and her siblings issued a video plea on Instagram for the return of their 84-year-old mother, who has been missing for nearly a week.

Powerball winners John and Lisa Robinson of Tennessee filmed NBC “Today" show with Savannah Guthrie, Carson Daly after Jan. 13, 2016.

The morning show has beefed up police and private security presence at New York's 30 Rockefeller Plaza as a precautionary measure.

See Savannah Guthrie's rise from local news to national TV anchor, with the support of her mother, Nancy Guthrie.