India, Feb. 3 -- Nancy Guthrie, the 84-year-old mother of NBC's TODAY show host Savannah Guthrie, has been missing since Saturday (January 30) from her Pima County, Arizona home. The search for Savannah Guthrie's mom is continuing with the Sheriff of Pima County considering the home from where she went missing a crime scene.

Pima County Sheriff Chris Nanos said at a press conference on Tuesday afternoon that they suspect foul play, as they believe Nancy Guthrie did not leave her home on her own. Sheriff Nanos also confirmed that Nancy Guthrie did not have any cognitive issues, describing her as "sharp as a tack."

Meanwhile, interest has mounted in the family of Nancy Guthrie, her husband, Charles Guthrie and their three children: Camron...