A startling discovery made during a private search for missing Arizona mother Nancy Guthrie initially raised fears that investigators had uncovered a major development in the case.

However, experts have now confirmed that the human remains found in a dry riverbed near Tucson are centuries old and have no connection to Guthrie’s disappearance.

Bone Discovered During Livestreamed Search

On the morning of May 7, Tucson resident and YouTube streamer AJ Wysopal was walking through a dry riverbed several miles from Guthrie’s Catalina Foothills home.

Wysopal had joined a number of independent searchers hoping to find information connected to the disappearance of the 84-year-old mother of “Today” co-host Savannah Guthrie.

While livestreaming the search, he noticed a pale object partially exposed in the soil. Believing it might be a human bone, he stopped searching and contacted emergency services.

Police officers, medical examiner personnel and anthropology specialists soon arrived at the location. Although the discovery immediately attracted public attention because of its proximity to the Guthrie search area, authorities quickly determined that it was not connected to a recent crime.

Remains Could Be Hundreds of Years Old

James T. Watson, a bioarchaeology expert with the Arizona State Museum and the University of Arizona, examined the site and surrounding evidence.

According to Watson, the remains may date from between 650 and 1250 A.D., making them approximately 750 years old—and potentially more than 1,000 years old at the earliest end of the estimate.

Ceramic fragments and the archaeological context of the area suggested that the individual may have belonged to the Hohokam culture, an ancient Indigenous society that lived throughout southern and central Arizona.

The Hohokam were known for creating extensive canal systems that allowed communities to grow crops in the harsh desert environment. Modern Indigenous groups in Arizona, including the Tohono O’odham Nation, are considered descendants of these early communities.

Watson believed the remains had originally been buried several feet underground. Seasonal rain and erosion may have gradually removed the surrounding soil, eventually exposing part of the burial in the riverbed.

The remains were recovered by the Arizona State Museum and transferred for repatriation to the Tohono O’odham Nation. No criminal investigation or additional forensic testing was considered necessary.

Experts Urge Respect for Ancient Burials

Although the person had been buried centuries ago, experts emphasized that the remains must still be treated with dignity.

Watson explained that disturbing an ancient Indigenous burial can be deeply painful for descendant communities, comparing it to the disruption of a modern cemetery.

The discovery also highlighted the risks associated with amateur searches. Private volunteers may unknowingly enter archaeological areas, contaminate potential evidence or disturb culturally significant locations.

The Pima County Sheriff’s Department has encouraged members of the public to leave searches connected to the Guthrie investigation to trained professionals. Anyone who encounters possible human remains should avoid touching or moving them and immediately notify authorities.

Search for Nancy Guthrie Continues

Nancy Guthrie was reportedly taken from her Tucson-area home during the early hours of February 1, 2026. Investigators have continued examining evidence and following leads, but her whereabouts remain unknown.

Her family announced a reward of up to $1 million for information leading to her recovery. Combined with rewards offered by law enforcement, the total available amount reached approximately $1.2 million.

The discovery in the riverbed was therefore not the breakthrough that Guthrie’s family and supporters had hoped for. Instead, it revealed the resting place of someone who lived in the Arizona desert many generations ago.

Authorities have firmly stated that the ancient remains are unrelated to Nancy Guthrie’s disappearance, and the investigation into her case remains active.

Anyone with serious, fact-based information concerning Nancy Guthrie’s whereabouts is urged to contact the FBI at 1-800-CALL-FBI or the Pima County Sheriff’s Department at 520-351-4900.

Main Sources: Fox News and comments from University of Arizona anthropologist James T. Watson.