The Latest Breaking News from Arizona

In a major development in the search for Nancy Guthrie, the missing 84-year-old mother of NBC Today show co-anchor Savannah Guthrie, federal investigators were seen arriving at the Arizona home of her daughter, Annie Guthrie, on Tuesday afternoon, as the case entered a more complex phase.

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The 84-year-old, who does not have cognitive impairments, was last seen on Saturday after one of her children dropped her off at her home.

Nancy Guthrie was last seen on Saturday night and is believed to have been taken against her will

Her cell phone was recovered.

Nancy Guthrie, 84, vanished from her Arizona home on Saturday night

The disappearance of Today anchor Savannah Guthrie's mother Nancy is now being treated as a "crime" by the authorities in Arizona.

A Northern Arizona University student has died after a night of drinking at a fraternity event

Nancy Guthrie, the 84‑year‑old mother of Savannah Guthrie, co‑anchor of NBC’s Today show, was reported missing from her home near Tucson, Arizona, and authorities are now treating the case as a possible crime, law enforcement officials said.