The 'Today' show host's 84-year-old mother, Nancy Guthrie, was last seen at her Arizona home on Jan. 31

Authorities have not identified any suspects or persons of interest in a desperate, five-day search for the missing mother of “Today” show host Savannah Guthrie.

"It was somewhere on that street. It was a white van, full-sized, with no printing on the sides. It was parked on the street," he said.