Nancy Guthrie investigation "becomes much harder" as time goes on, expert says

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Nancy Guthrie has been missing for 45 days, and with the latest update successful the lawsuit being of small usage to authorities, 1 adept tells CBS News the extended timeline means it "becomes overmuch harder to support the probe going."

Law enforcement sources told CBS News that further images were obtained successful the past mates of weeks from surveillance cameras installed astatine Guthrie's Tucson home, wherever she is believed to person been abducted successful the mediate of the nighttime connected Feb. 1.

The images, taken from a camera fastened to a obstruction and focused connected the backmost of the location and different that showed the driveway and beforehand of the store door, captured household members, landscapers and excavation workers stretching backmost weeks anterior to the kidnapping. Nothing was deemed suspicious, and nary images reviewed showed the fishy captured connected the beforehand doorway camera.

In the seventh week of the probe into the disappearance of the 84-year-old parent of "Today" co-host Savannah Guthrie, doorbell camera video shared by the FBI connected Feb. 10 remains the lone known images of the suspect.

Lance Leising, a retired FBI supervisory peculiar agent, told CBS News it each points to "A deficiency of meaningful leads. That's the archetypal happening it says to me."

"It becomes overmuch harder to support the probe going, support it existent and combat for caller leads," helium added.

DNA recovered from the country is inactive being analyzed, with investigators turning to forensic familial genealogy successful hopes of breaking the lawsuit open. It's a method that's been utilized successful the past to find different high-profile criminals, including Bryan Kohberger, the antheral who killed 4 University of Idaho students successful 2022. Leising warned, however, that the process "takes a while."

"Maybe you've got aggregate radical wrong the aforesaid DNA household that could perchance beryllium suspects. You person to analyse each 1 of those independently," helium said.

Authorities besides proceed to person tips, with implicit 1,500 imaginable leads coming into the FBI aft the Guthrie household announced a $1 cardinal reward. But it's been astir 3 weeks since the household past called connected the nationalist for assistance and much than a period since instrumentality enforcement held a property league to sermon the case.

"I'd similar to beryllium hopeful that — and I'm definite the household is incredibly hopeful — that the soundlessness is due to the fact that they're connected to something," Leising said. "They conscionable request to analyse harder."

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