Police Might Turn to Genealogy Sites in Nancy Guthrie Case

Authorities are considering using DNA databases to help solve the woman's disappearance.

Published on Feb. 26, 2026

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Authorities investigating the disappearance of Nancy Guthrie in Tucson, Arizona say they may turn to DNA genealogy databases, the same approach that has helped solve other high-profile cold cases in recent years.

Why it matters

The use of genetic genealogy has become an increasingly powerful tool for law enforcement, allowing them to potentially identify suspects in cases that have gone unsolved for decades. However, the practice also raises privacy concerns about the use of personal DNA information.

The details

Police have not provided many details about the Guthrie case, but they say they are considering using the same DNA genealogy techniques that helped crack cases like the "Golden State Killer" murders in California and the fatal stabbings of four college students in Idaho.

  • Nancy Guthrie was reported missing on February 15, 2026.

The players

Nancy Guthrie

A Tucson, Arizona resident who was reported missing on February 15, 2026.

Pima County Sheriff's Office

The law enforcement agency investigating Guthrie's disappearance.

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What’s next

Police have not indicated a timeline for when they may decide to use genetic genealogy in the Guthrie case.

The takeaway

The potential use of DNA databases by law enforcement to solve cold cases raises important questions about privacy and the ethical boundaries of such investigative techniques, which will likely be debated as this case progresses.