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Hopes were raised when investigators said they found DNA inside the Arizona home of Today show co-host Savannah Guthrie’s mother Nancy Guthrie, who vanished in the early hours of Feb. 1. The DNA found inside Guthrie’s house, however, was “mixed,” complicating the search for the 84-year-old mother of three, Pima County Sheriff Chris Nanos told NBC News on Friday, Feb. 20. “We listen to our lab, and our lab tells us that there’s challenges with it,” Nanos told NBC News, noting that it could take “weeks, months or maybe a year” to get results. A mixed sample contains genetic material from more than one person, which makes it harder to identify, CeCe Moore, the chief genetic genealogist at Parabon Nanolabs, tells PEOPLE. “A complex mixture is much more difficult to work with,” says Moore, who has helped law enforcement solve more than 300 cold cases using DNA and genetic genealogy. “The more people you get in that DNA (sample), particularly unknown people’s DNA, the harder it is to just isolate one person’s out of that,” says Moore. Sheriff in Nancy Guthrie Kidnapping Case Says Investigation Is ‘Still Growing’ as Search Enters Fourth Week Moore is not part of the investigation, but has worked with the lab the Pima County Sheriff’s Office is using to identify the genetic material. “They’re very, very good at what they do,” she says. “So if they are struggling with it, that tells me it’s a very difficult sample.” Based on what she has heard on the news about the evidence, she says she believes it’s “less likely to be a blood sample or something that is a really good source of DNA.” FBI in Contact with Mexican Authorities amid Search for Nancy Guthrie: Reports Want to keep up with the latest crime coverage? Sign up for for breaking crime news, ongoing trial coverage and details of intriguing unsolved cases. PEOPLE’s free True Crime newsletter. The good news, though, is the fact that DNA evidence was found in the first place. “If I was the kidnapper, I would be extremely worried right now, particularly if I knew there was some kind of altercation, or I knew I touched things in there,” says Moore. Speaking about the armed assailant who was caught on Nest camera surveillance video at Nancy’s front door, Moore says that person wore gloves and a mask to try to avoid leaving DNA behind. But that is very difficult to do, she says. “It looked like he may have had a bite flashlight in his mouth,” she explains. “When you see him bending over toward the camera, I think it’s very possible saliva could have been left because of that.” He could have easily transferred his saliva onto those gloves and then onto anything he touched, such as a doorknob, she says
The investigation into Nancy Guthrie’s disappearance has entered its fourth week, with complexities surrounding her alibi. The most challenging issue facing experts is the presence…
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How ‘Mixed DNA’ is Complicating Search for Nancy Guthrie as Investigation Enters Week Four: Expert
Hopes were raised when investigators said they found DNA inside the Arizona home of Today show co-host Savannah Guthrie’s mother Nancy Guthrie, who vanished in the early hours of Feb.…
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Continuing at the Olympics: Close-up video of champion’s violation emerges, organizers officially speak out
Continuing at the Olympics: Close-up video of champion’s violation emerges, organizers officially speak out Olympic Gold Medal Drama: Video reveals close-up of violations by the…
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Olympic Gold Medal Drama: Video reveals close-up of violations by the champion, organizers officially speak out
Olympic Gold Medal Drama: Video reveals close-up of violations by the champion, organizers officially speak out. The controversy surrounding the prestigious gold medal erupted once…
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Correction regarding the information “Nancy Guthrie’s remains found in the garden”
Shocking developments following the disappearance of TV host Savannah Guthrie: Warning issued for family member’s home search, clarification needed regarding newly discovered remains The disappearance…
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Regarding the disappearance of MC Savannah Guthrie’s mother: Correction to the previous information: Nancy Guthrie’s remains found in the garden
Shocking developments following the disappearance of TV host Savannah Guthrie: Warning issued for family member’s home search, clarification needed regarding newly discovered remains The disappearance…
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After a month of searching, Nancy Guthrie has finally appeared, and her health condition is now…
After a month of searching, Nancy Guthrie has finally appeared, and her health condition is now… To see our latest updates on the Nancy Guthrie…
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Olympic shock: Oskar Eriksson’s “video evidence” debunks the Curling Gold Medal controversy
Sweden is refusing to let go of Canada’s alleged Olympic curling cheating It’s only cheating if you get caught — and the Swedish aren’t letting…
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The cause of death for the nine victims of the Tahoe avalanche has been determined: They all shared one common characteristic.
Six women among those killed in an avalanche in Tahoe’s backcountry this week were a group of “mothers, wives and friends, all of whom connected through the…
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The official cause of death for the nine victims of the Tahoe avalanche has been determined: They all shared one common characteristic
Six women among those killed in an avalanche in Tahoe’s backcountry this week were a group of “mothers, wives and friends, all of whom connected through the…
- “WE WERE TERRIFIED”: The Heartbreaking Reason Her Own Y*ung Ones Refused To Ever Look At Her Again! 🏠🤐
THE GHOSTWRITTEN TRAGEDY: Inside the 4-Million Dollar “Black Widow” Scheme of Kouri Richins KAMAS, UTAH… Read more: “WE WERE TERRIFIED”: The Heartbreaking Reason Her Own Y*ung Ones Refused To Ever Look At Her Again! 🏠🤐 - EXPOSED: The “Grief Author” SCAM: How She Used A Secret Ghostwriter To Profit Off A Tragedy She Actually Created! 📖🐍
THE GHOSTWRITTEN TRAGEDY: Inside the 4-Million Dollar “Black Widow” Scheme of Kouri Richins KAMAS, UTAH… Read more: EXPOSED: The “Grief Author” SCAM: How She Used A Secret Ghostwriter To Profit Off A Tragedy She Actually Created! 📖🐍 - MY FIANCÉ CHASED ME INTO A FUNERAL… BUT THE MAFIA BOSS INSIDE ALREADY KNEW MY NAME
I looked at Silas Galloway’s offered hand. Funeral & Bereavement “What are the terms?” I… Read more: MY FIANCÉ CHASED ME INTO A FUNERAL… BUT THE MAFIA BOSS INSIDE ALREADY KNEW MY NAME - Then She Broke: Kouri Richins addressed her boys in a 5-page courtroom statement before breaking down over and over again
Kouri Richins, the Utah mom convicted of murdering her husband, spoke for nearly 40 minutes… Read more: Then She Broke: Kouri Richins addressed her boys in a 5-page courtroom statement before breaking down over and over again - THE TOWN LAUGHED WHEN HE MARRIED THE “RUINED” GIRL… UNTIL SHE READ HER FATHER’S NAME FROM THE DEAD MAN’S WILL
“Silas Bell,” Gideon said, his voice flat as winter stone, “you sold your daughter once… Read more: THE TOWN LAUGHED WHEN HE MARRIED THE “RUINED” GIRL… UNTIL SHE READ HER FATHER’S NAME FROM THE DEAD MAN’S WILL - She Poisoned Her Husband, Wrote a Children’s Grief Book… Then Kouri Richins Heard the Words That Changed Everything ForeverUtah mom Kouri Richins — who killed her husband and then wrote a children’s book… Read more: She Poisoned Her Husband, Wrote a Children’s Grief Book… Then Kouri Richins Heard the Words That Changed Everything Forever