TUCSON, Ariz. — Seven months into the search for Nancy Guthrie, the 84-year-old mother of NBC "Today" co-anchor Savannah Guthrie, a new and unverified claim about a plumber who allegedly visited her home in the days before she vanished has drawn fresh attention to a case that remains without a named suspect.

Guthrie disappeared from her home in the Catalina Foothills, an upscale suburb north of Tucson, in the early morning hours of Feb. 1. Investigators believe she was abducted, and doorbell camera footage released by the FBI shows a masked individual on her porch appearing to tamper with the security camera before her disappearance.

The latest claim comes from Mark the Shark, a YouTube streamer who has followed the case closely for months. He wrote on X that a source told him a plumber had been working at Guthrie's house about a week before she went missing, and he questioned whether the detail could hold significance for investigators.

The Pima County Sheriff's Department, which is leading the investigation alongside the FBI, has not confirmed that any repair or maintenance work was underway at Guthrie's home before her disappearance. Authorities have not commented publicly on the plumber claim, and it has not been corroborated by law enforcement or verified by other news organizations. The claim remains, for now, an unconfirmed detail circulating among online followers of the case rather than an established investigative lead.

It is already established that a masked individual was captured on camera outside Guthrie's property on more than one........

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