A livestreamer searching for missing 84-year-old Nancy Guthrie discovered a bone in a wash less than five miles from her Tucson, Arizona, home on Thursday, but police moved quickly to rule out any connection to her disappearance, saying the remains appear to be at least 50 years old and possibly "prehistoric."
The find sent Tucson police rushing to the scene. Officers cordoned off the area, and officials soon confirmed the bone was human. But the Tucson Police Department told local station KVOA that the discovery would not trigger a criminal probe.
The department's statement was blunt, as the New York Post reported:
"This will be a prehistoric anthropological investigation."
The University of Arizona's Anthropology Department is now assisting with the examination of the remains. No further details about the age estimate's basis have been made public.
Nancy Guthrie, the mother of "Today" show host Savannah Guthrie, hasn't been seen since vanishing from her home in February. The circumstances of her disappearance have drawn national attention and a steady stream of volunteer searchers combing the desert terrain around Tucson.
The case has generated a trail of leads and theories. Blood evidence found on Nancy Guthrie's porch led a retired FBI profiler to suggest a single attacker may have carried her away, raising the specter of abduction rather than a voluntary departure.
That Thursday's bone discovery happened during a search tied directly to the Guthrie case underscores just how active the volunteer effort remains, months after the 84-year-old was last seen. It also shows how quickly any find in the area can generate intense interest, even when it turns out to have no bearing on the investigation.
Investigators have pursued multiple avenues. The forensics lab that helped crack the Gilgo Beach case has reportedly been eyed in connection with the Guthrie investigation, a sign that authorities are not treating this as a routine missing-person file.
The Tucson Police Department's rapid determination that the bone predates any modern crime may come as a letdown to those hoping for a break in the Guthrie case. But it is not unusual in southern Arizona, where human habitation stretches back thousands of years and where washes regularly expose buried material after seasonal rains.
Officials offered no specifics on how they arrived at the "at least 50 years old" estimate so quickly, or what distinguishes these remains as potentially prehistoric. The involvement of the University of Arizona's Anthropology Department suggests the bone may have characteristics, mineralization, context, or associated artifacts, that point well beyond the modern era.
The area near the wash has reportedly yielded Native American artifacts in the past, though details on prior discoveries remain thin.
For now, the Tucson Police Department says there is no criminal investigation connected to the remains. That leaves the Guthrie case exactly where it was before Thursday: open, unresolved, and drawing searchers into the desert.
The livestreamer who found the bone was not identified by name. But the fact that a civilian content creator, broadcasting a search in real time, was the one to make the discovery speaks to the unusual nature of this case. Volunteers have previously turned up suspicious items, including a backpack found in a Tucson storm drain, during independent searches for Guthrie.
That kind of grassroots effort can be a double-edged sword. Civilian searchers sometimes locate evidence that law enforcement missed. They can also contaminate scenes, chase false leads, and, as happened Thursday, generate headlines that briefly redirect attention away from the actual investigation.
Still, months into a case with no public resolution, it is hard to fault people for looking. When an 84-year-old woman vanishes from her home and the official investigation has not produced an arrest or a confirmed sighting, the public's patience thins. People act.
Criminal profilers have speculated that Guthrie's kidnapping may have been an act of retribution against her family, a theory that, if credible, would raise the stakes considerably and widen the circle of potential suspects.
The Tucson Police Department has not publicly stated how Nancy Guthrie's disappearance is officially classified. Whether it is treated as a missing-person case, an abduction, or something else carries real consequences for the resources and legal tools available to investigators.
The exact location of the wash where the bone was found has not been disclosed. Nor have officials explained which specific personnel or tests led to the rapid conclusion that the remains are prehistoric. The University of Arizona's anthropology team may eventually publish findings, but no timeline for that has been offered.
Ring camera footage from miles away has been folded into the investigation, suggesting that detectives are casting a wide net. But wide nets, without a clear suspect or confirmed crime scene, can take a long time to close.
Meanwhile, Savannah Guthrie has not publicly commented on Thursday's discovery. The "Today" show host's connection to the case has kept it in the national spotlight, a rare thing for a missing-person investigation involving an elderly woman in a mid-sized southwestern city.
Thursday's find was not the break the Guthrie family or the public was hoping for. A bone in a desert wash, confirmed human but dated to an era long before Nancy Guthrie was born, tells us nothing about where she is or what happened to her.
What it does tell us is that people are still looking. That the case has not faded from public attention. And that every lead, even one that turns out to be centuries old, will be scrutinized until someone provides real answers.
An 84-year-old woman does not simply vanish. Somebody knows something. The desert keeps its secrets, but communities that refuse to stop searching have a way of shaking them loose.
