Nancy Guthrie, the mother of “Today” co-host Savannah Guthrie, was last seen in Tucson the night of Jan. 31.

Notable Chris Nanos squabbles this week included one with NewsNation and another with the further-right Newsmax, as his office gets deluged with tips, scams and fake news.

The FBI has expanded its search for Nancy Guthrie across the border after a new ransom note for the NBC anchor's mom emerged. The FBI reportedly reached out to several Mexican federal law enforcement agencies to spread the search,

Doorbell video and broken floodlights point to multiple suspects in Nancy Guthrie abduction case. Experts analyze evidence in mysterious disappearance.

Savannah Guthrie is focused on the search for her missing mother, Nancy Guthrie, in Arizona three weeks after she went missing

The FBI has released a physical description of the person captured on Nancy Guthrie’s porch and doubled the reward to $100,000 for information leading to her location or an arrest. You’ll learn what the new suspect details include — from height and build to the distinctive black Ozark Trail backpack seen on the doorbell footage

Authorities insist the case is still very much active, with the FBI receiving more than 19,000 tips. But the case is branching off into some new directions.

Authorities trying to solve the disappearance of Nancy Guthrie say they might tap DNA genealogy databases, the same step that police took to unravel a decades-old series of murders in California and the fatal stabbings of four college students in Idaho.