Tucson Police Utilize DNA Evidence and Canvass Gun Shops in Guthrie Murder Case

Investigators are using advanced forensic technology and questioning local firearms dealers to identify a suspect in the killing of Nancy Guthrie.

Published on Feb. 23, 2026

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In the investigation into the murder of Nancy Guthrie in Tucson, Arizona, police are utilizing a high-tech DNA analysis tool that has helped solve other prominent cases. Authorities are also going door-to-door to local gun shops, asking owners about recent sales in an effort to identify a potential suspect.

Why it matters

The use of advanced forensic DNA analysis and the canvassing of gun shops highlight the lengths investigators are going to in order to solve this high-profile homicide case. Tucson has seen an uptick in violent crime in recent years, and this case has drawn significant attention from the local community and national media.

The details

Investigators have recovered DNA evidence from Guthrie's home that they hope will help identify a suspect in her murder. They are using a specialized DNA analysis tool that has proven effective in cracking other complex cases. In addition, police are going door-to-door to local gun shops, questioning owners about any recent sales that could be connected to the crime.

  • The murder of Nancy Guthrie occurred on February 15, 2026.
  • Investigators began utilizing the advanced DNA analysis tool and canvassing gun shops on February 17, 2026.

The players

Nancy Guthrie

The victim of the murder that is the focus of this investigation.

Tucson Police Department

The law enforcement agency leading the investigation into Guthrie's murder.

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What they’re saying

“We must leave no stone unturned in our pursuit of justice for Nancy and her family.”

— Chief of Police (Tucson Daily Star)

What’s next

Investigators plan to continue analyzing the DNA evidence and following up with local gun shop owners in the coming days as they work to identify a suspect in Guthrie's murder.

The takeaway

This case highlights the increasingly sophisticated forensic tools and investigative techniques that law enforcement is utilizing to solve complex crimes, even in the face of rising violent crime rates in some communities.