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International Business Times UK
International Business Times UK
Asher Añiga

Nancy Guthrie Update: Why Forensic Experts Say the Kidnapper 'Should Be Extremely Concerned' Right Now

Tucson wakes in layers, like someone slowly lifting a blind. The mountains take their time, the streets do too. On Feb. 1, that familiar rhythm was shattered when Nancy Guthrie, 84, failed to arrive at a friend's home for a livestreamed church service and never returned to the day.

Investigators believe Guthrie was abducted overnight from her Tucson home, having last been seen on Jan. 31. Her family has been publicly cleared as suspects, yet no official suspect or person of interest has been named — a vacuum that invites the internet to act as it always does: loudly and without restraint.

In Britain, one police force would typically lead an investigation, with a relatively disciplined public line. In Arizona, a county sheriff's office takes the lead, federal agencies may become involved, and the message can wobble depending on who has a microphone and what kind of day they are having.

Detectives Chase a Moving Outline

The Nancy Guthrie update still hinges on a few seconds of doorbell video, grainy enough to frustrate everyone, but clear enough to keep people staring. A masked, armed figure was captured near Guthrie's home around the time she disappeared, and investigators have been trying to identify clothing and gear seen in the footage.​

Then came a glove found about two miles from her home, an object that sounds almost theatrical until you remember how ordinary roadsides are and how easily evidence can become contaminated, moved, or misread. NBC News reported that DNA from the glove did not match any samples in CODIS, the FBI's national criminal DNA database, which is a dead end only if you expected a kidnapper to be obliging enough to already be on file.​

Still, the lack of a CODIS hit helps explain why detectives are leaning so hard on the public. The Pima County Sheriff's Department has been flooded with calls, with Arizona Central reporting nearly 18,000 since Feb. 1 after images and video were released. That kind of volume is both a gift and a trap, because tips are not the same thing as truth.

The Forensic Pressure on Whoever Did This

Investigators have been working with DNA found at the home, and NBC News reported they are turning to forensic genetic genealogy, in part because early testing has not produced a straightforward identification.​

Genetic genealogy can sound like a magic trick, but it is closer to painstaking accounting. Analysts take DNA believed to be connected to the case, upload it to databases that allow law enforcement access, then build family trees from distant matches until an 'identity hypothesis' becomes a real person detectives can investigate.​

CeCe Moore, a genetic genealogy expert, put it bluntly in comments reported by NBC News. 'If I was the kidnapper, I would be extremely concerned right now, because using investigative genetic genealogy, he will be identified. It's just a matter of time,' she said.​

Time is the awkward word here, because it is doing two jobs at once. It is what investigators need to sort complex DNA and run down relatives, and it is what an 84-year-old woman may not have in abundance. That tension is why Sheriff Chris Nanos has sounded less like a spokesman and more like a man trying to pry open a locked door with his voice. 'Just let her go. It will work out better for you in the long run,' he said, urging the suspect to leave Guthrie somewhere safe.

Money has followed the attention, as it almost always does. The FBI is offering a $100,000 reward for information leading to Guthrie or an arrest. Separately, Pima County officials said an anonymous $100,000 donation to 88-CRIME lifted that program's reward to $102,500, on top of the federal offer.

None of it is confirmation, and plenty of circulating claims still belong in the 'grain of salt' pile. But the direction of travel is clear, even if the destination is not.

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