Nancy Guthrie DNA breakthrough

Investigators are hopeful that the new technology being utilized will provide a definitive lead in the kidnapping case, which has remained unsolved since Guthrie was taken from her Tucson home.

Sources familiar with the investigation say the DNA sample was found during a recent forensic review of the property.

Savannah Guthrie has remained largely out of the public eye as the bureau continues its high-stakes analysis.

While the FBI has not yet identified a suspect, the discovery of this genetic material is being hailed as a major breakthrough in the long-running search.