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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 of "mixed DNA" found at the crime scene. Hopes were

Continue reading 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

Genetic genealogist CeCe Moore tells PEOPLE, 'If I was the kidnapper, I would be extremely worried right now' Pima County Sheriff, Chris Nanos; Savannah Guthrie and her mother, Nancy Guthrie.Credit : Jan Sonnenmair/Getty; Don Arnold/WireImage Hopes

Continue reading Experts report fresh findings from the mixed DNA sample in the kidnapping case of Nancy Guthrie as the probe moves into week four

The masked man who is suspected in Nancy Guthrie’s abduction may have approached her Tucson property before the morning she was snatched from her home, according to reports. Sources close to the investigation told ABC

Continue reading Just past midnight, authorities dropped a stunning update in the abduction case that has gripped the entire nation — and what they revealed is shaking this investigation to its core.

The masked man who is suspected in Nancy Guthrie’s abduction may have approached her Tucson property before the morning she was snatched from her home, according to reports. Sources close to the investigation told ABC

Continue reading The nation is obsessed with Nancy Guthrie’s disappearance — FBI briefings, analyzed Ring footage, crypto clues, endless theories.

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,”

Continue reading How ‘Mixed DNA’ is Complicating Search for Nancy Guthrie as Investigation Enters Week Four: Expert

The masked man who is suspected in Nancy Guthrie’s abduction may have approached her Tucson property before the morning she was snatched from her home, according to reports. Sources close to the investigation told ABC

Continue reading The nation is obsessed with Nancy Guthrie’s disappearance — FBI briefings, analyzed Ring footage, crypto clues, endless theories.

The masked man who is suspected in Nancy Guthrie’s abduction may have approached her Tucson property before the morning she was snatched from her home, according to reports. Sources close to the investigation told ABC

Continue reading Nancy Guthrie’s disappearance has gripped the nation — FBI updates, Ring footage, Bitcoin trails, DNA dead ends.

Milano Cortina 2026 Olympics - Curling - Men's Round Robin Session 4 - Canada vs Sweden - Cortina Curling Olympic Stadium, Cortina d'Ampezzo, Italy - February 13, 2026. Ben Hebert of Canada, Marc Kennedy of

Continue reading The punishment imposed on the Canadian curler for a double-touch foul at the Winter Olympics

Milano Cortina 2026 Olympics - Curling - Men's Round Robin Session 4 - Canada vs Sweden - Cortina Curling Olympic Stadium, Cortina d'Ampezzo, Italy - February 13, 2026. Ben Hebert of Canada, Marc Kennedy of

Continue reading Here’s the punishment facing the Canadian curler who committed a double-touch violation during the Winter Olympics