The Arizona sheriff leading the investigation into the disappearance of “Today” host Savannah Guthrie’s mother choked up as he described the desperate search for the missing 84-year-old. Pima County Sheriff Chris Nanos was speaking to CBS 5 host Briana Whitney as the rescue mission for Nancy Guthrie enters its fourth day.

"They are a family and they lean on each other," Pima County Sheriff Chris Nanos told PEOPLE

The investigation into the disappearance of Savannah Guthrie's 84-year-old mom Nancy continues for a fourth day, as new details emerge from Arizona.

Savannah Guthrie's mother Nancy's house has officially been declared as a 'crime scene' after she disappeared.

The disappearance of Nancy Guthrie, mother of the news anchor Savannah Guthrie, has reporters, neighbors and drones flooding streets and foothills in Tucson, Ariz.

As the investigation into Nancy Guthrie's disappearance enters its fourth day, Pima County officials out of Arizona are still operating under the belief that Savannah Guthrie's 84-year-old mother is alive.

Pima County Sheriff Chris Nanos emphasized Tuesday, Feb. 3 that investigators believe 84-year-old Nancy Guthrie was taken against her will

Authorities said they were continuing their search after Nancy Guthrie, the mother of Today co-host Savannah Guthrie, was taken from her Tucson home over the weekend. Pima County Sheriff Chris Nanos told reporters they were looking at all leads,