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Iowa Cold Case Cracked: Suspect Charged in 1987 Murder

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  Published in Science and Technology on Tuesday, February 17th 2026 at 23:18 GMT by Us Weekly
      Locales: Idaho, Oklahoma, UNITED STATES

Des Moines, Iowa - February 18, 2026 - In a striking echo of the Bryan Kohberger case, law enforcement has utilized the increasingly powerful technique of genetic genealogy to bring a suspect to justice in the decades-old murder of Nancy Guthrie. James Phillip Ray, 52, has been formally charged with first-degree murder in connection with Guthrie's death, which occurred on July 18, 1987, in her Iowa home. This breakthrough, announced late last month, demonstrates the escalating effectiveness of DNA-driven investigative methods in cracking cold cases that have long haunted families and investigators.

The Guthrie case remained unsolved for 38 years, a stark reminder of the challenges faced by investigators before the advent of advanced DNA analysis and readily accessible genealogical databases. The key to unlocking the investigation, according to sources close to the investigation, was the uploading of Guthrie's DNA profile to GEDmatch, a public, open-record DNA database commonly used by both amateur genealogists and law enforcement. This isn't a direct match system; rather, it identifies distant relatives based on shared DNA segments. From there, investigators meticulously constructed a family tree, progressively narrowing the field of potential suspects.

"They built a family tree and were able to find a relative of the suspect," an anonymous source confirmed to Us Weekly. "Guthrie's DNA was uploaded to GEDmatch in 2022, initiating a new phase in the investigation." This new phase leveraged advancements unavailable to investigators in 1987, effectively giving a voice to the victim decades after her tragic death. The process, while complex and time-consuming, allows investigators to infer the DNA of potential suspects based on the DNA of their relatives in the database.

The similarities to the Kohberger case are undeniable. In that high-profile investigation, DNA recovered from the scene of the horrific murders of Kaylee Goncalves, Madison Mogen, Xana Kernodle, and Yukei Chen in Idaho was similarly uploaded to GEDmatch. This led investigators to a distant relative of Kohberger, ultimately guiding them to his identification and subsequent arrest in December 2022. Kohberger now awaits trial, facing four counts of first-degree murder. Both cases highlight the power of this relatively new forensic tool, which has transformed how law enforcement approaches unsolved crimes.

The Rise of Investigative Genetic Genealogy

Investigative genetic genealogy is not without its complexities and ethical considerations. The practice relies on individuals voluntarily submitting their DNA to genealogical databases, often for the purpose of tracing their family history. While many users are comfortable with this level of data sharing, concerns remain about privacy and potential misuse of genetic information. Strict protocols are now in place to ensure that the technique is used responsibly and in accordance with legal guidelines. Typically, law enforcement agencies must obtain a warrant or court order before accessing and utilizing DNA data in these databases. The Iowa Department of Criminal Investigation, in this instance, worked closely with legal counsel to ensure compliance with all applicable regulations.

Experts predict that the use of genetic genealogy will continue to grow in the coming years. Databases like GEDmatch and FamilyTreeDNA are becoming increasingly comprehensive, and the analytical tools are becoming more sophisticated. This means that even older cold cases, with limited or degraded DNA evidence, may now be solvable. Furthermore, advances in DNA extraction techniques are allowing investigators to obtain usable DNA profiles from increasingly challenging samples.

The successful resolution of the Nancy Guthrie case and the ongoing prosecution of Bryan Kohberger are just two examples of this trend. Across the nation, law enforcement agencies are actively revisiting cold cases, hoping to leverage the power of genetic genealogy to bring closure to grieving families and justice to victims. The technique has already played a crucial role in identifying suspects in numerous other cold cases, including those involving homicide, sexual assault, and unidentified remains. The Guthrie family, after nearly four decades of uncertainty, can now look forward to a trial and, potentially, a measure of peace. The arrest of James Phillip Ray serves as a powerful testament to the enduring pursuit of justice and the transformative potential of modern forensic science.