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

Investigators are combing through hundreds of leads, more than 48 hours after Nancy Guthrie was taken against her will from her home.

Earlier in the day, TMZ reported that it had received an unverified ransom note related to the case that demanded millions in Bitcoin, which they sent to the sheriff’s department.