In the ongoing investigation into the kidnapping of Nancy Guthrie, a fourth person has been detained for questioning south of Tucson, Arizona. Guthrie, the 84-year-old mother of TODAY show host Savannah Guthrie, was reported missing from her Catalina Foothills home on February 1. Legal commentator Nancy Grace reported the detention, which took place late at night, but the Pima County Sheriff's Department has yet to issue an official statement regarding this development. This area has previously been the site of earlier detentions, although those individuals were released without charges. The FBI is also involved, currently analyzing DNA evidence from a private lab in Florida, with hopes of uncovering new leads in the case. As the investigation progresses, public interest and frustration are mounting due to the lack of information from authorities.