TUCSON, Ariz. — More than seven months after Nancy Guthrie disappeared from her Tucson home, a former FBI agent says she believes available evidence suggests the 84-year-old mother of "Today" show co-anchor Savannah Guthrie is no longer alive, though investigators have not confirmed that assessment and the case remains officially classified as an active missing-person investigation.

Nancy Guthrie was last seen at her Catalina Foothills residence on the evening of January 31 and was reported missing the following day. Investigators have treated the case as a suspected abduction from the outset, and no suspect has been publicly named in the seven-plus months since her disappearance.

The latest assessment came from Jennifer Coffindaffer, a former FBI agent, during an interview on "The Sharpe Exchange," a YouTube program hosted by Wyatt Sharpe. Coffindaffer said the information available to her led her to believe Nancy had likely died, while explicitly acknowledging that her view represented her own outside interpretation rather than an official investigative conclusion. "We have a lot of proof that she probably isn't alive," Coffindaffer said.

Coffindaffer cited several specific factors behind her assessment. She noted that Nancy reportedly required regular medication that investigators believe was never taken after her disappearance. She also pointed to........

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