Arizona home of Today show host’s missing mother treated as ‘crime scene’

Savannah Guthrie's mother, Nancy, 84, was last seen on Saturday evening and signs indicate she did not leave alone

Authorities in Arizona searching for the 84-year-old mother of the Today show presenter Savannah Guthrie said on Monday they were treating the missing woman's home as a crime scene, and expressed grave concern" for her safety.

Nancy Guthrie was last seen by her family at her house near Tucson on Saturday night, and was reported missing on Sunday lunchtime, sparking a search using a helicopter, drones and dogs, officials said.

The Associated Press contributed to this report