TUCSON, Ariz. — Three months after 84-year-old Nancy Guthrie vanished from her Catalina Foothills home in a suspected abduction, the investigation has taken a grim turn as criminal profilers and law enforcement sources increasingly believe her kidnapper may no longer be alive, complicating efforts to locate the mother of NBC "Today" co-anchor Savannah Guthrie.

The case, which has captivated the nation, remains active with no arrests and no definitive proof of life or death. Security footage captured a masked individual approaching Nancy's door around the time of her disappearance on Feb. 1. Blood evidence, a disabled Ring camera and signs of a struggle pointed to foul play rather than a voluntary departure. Despite thousands of tips and extensive searches, authorities have not publicly named a suspect.

Forensic nurse and criminal profiler Dr. Ann Burgess, featured in a recent NewsNation special, suggested the person seen on doorbell camera footage may have been killed shortly after the encounter. Other experts, including retired FBI agents, have echoed the possibility that the perpetrator is deceased, which would explain the lack of ransom demands or further communication.

Pima County Sheriff's Office and the FBI continue joint efforts, though public friction between agencies has surfaced. FBI Director Kash Patel criticized early coordination, claiming the bureau was initially kept out for several days. Sheriff Chris Nanos has pushed back, insisting collaboration has improved and the........

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