Last week, law enforcement said video footage from Nancy Guthrie's doorbell camera was overwritten. But the FBI has since released footage as Guthrie still has not been found.

Live updates in the search for Nancy Guthrie, the mother of "TODAY" co-anchor Savannah Guthrie who disappeared from her home in Arizona.

Fox News host Greg Gutfeld suggested Wednesday that “Today” show host Savannah Guthrie take a polygraph test to help solve the case of her missing mother, Nancy Guthrie. (Watch the video below.) The intent, he said, is that it would pressure other family members and people in her orbit to submit to a lie-detector as well.

FBI widens search after releasing man detained near border as masked‑figure footage fuels national attention. Follow live.

Following the biggest break in the case so far, Pima County Sheriff's deputies detained a person of interest during a traffic stop.

The case took another bizarre turn Wednesday morning when TMZ announced that the outlet received a letter demanding a payment of one bitcoin — about $67,000 — in exchange for the name of Guthrie's kidnapper.

Savannah Guthrie has described her mother as the "rock" who held her family together after her father's death when she was a teenager.

The FBI on Tuesday released images and videos showing a person outside Nancy Guthrie's front door in Tucson, Arizona, wearing a ski mask and gloves and carrying a backpack and what appears to be a weapon.