India, Feb. 2 -- Authorities in Arizona are requesting assistance from the public in locating Nancy Guthrie, the mother of TODAY show anchor Savannah Guthrie.

During a briefing on February 2, Pima County Sheriff Chris Nanos stated that search and rescue teams have not been able to find Nancy Guthrie, 84, who was reported missing from her residence near Tucson at approximately noon on February 1.

"We saw some things at the home that were concerning to us," Nanos stated. "We believe now, after we processed that crime scene, that we do, in fact, have a crime scene, that we do, in fact, have a crime, and we're asking the community's help."

Nanos mentioned that Guthrie faces "some physical challenges" and needs daily medication which "if sh...