It’s been six weeks since Nancy Guthrie disappeared from her Tucson home. Investigators are being told to start from scratch.

Today- co-anchor Savannah Guthrie's mother, 84, is still missing six weeks after her Tucson, Ariz., abduction.

CeCe Moore, a genetic genealogist, said she found it "very hard to believe the perpetrator didn't leave his DNA behind." ...

A forensic expert recommends that investigators re-swab Nancy Guthrie’s home, believing the suspect likely left saliva DNA at the scene.

The 'Today' co-anchor's mother, 84, is still missing six weeks after her abduction in Tucson, Ariz.

A forensic expert weighs in on the challenges investigators face in separating the mixed DNA evidence found in Nancy ...

Authorities investigate the kidnapping of Nancy Guthrie, mother of Savannah Guthrie. Mixed DNA samples pose identification challenges but could eventually help find the kidnapper. “If I was the ...

Genetic genealogist CeCe Moore tells PEOPLE, 'If I was the kidnapper, I would be extremely worried right now' A "mixed" sample of DNA was found at Nancy Guthrie's house, Pima County Sheriff Chris ...

DNA from Nancy Guthrie’s home yielded only a partial profile, delaying suspect identification. But, all is not lost. Genealogy experts say investigative genetic genealogy might help resolve the mixed ...

An expert on genetic genealogy has explained a significant issue that law enforcement face when using the investigative method to identify a suspect in the disappearance of 84-year-old Nancy Guthrie, ...

On the morning of Feb. 1, Nancy Guthrie was expected at a friend’s home in Tucson, Arizona, to watch a livestreamed church service, as she did most Sundays. But when the 84-year-old mother of “TODAY” ...