As the search for Savannah Guthrie’s missing mother continues, local authorities have reportedly deployed the use of a “high-tech” scanner in an attempt to track Nancy Guthrie’s pacemaker.

According to a Saturday, February 14, report from Fox News Digital, law enforcement officials engaged in the ongoing search for Savannah’s 84-year-old mother have “used a high-tech Bluetooth scanner placed on the bottom” of “helicopters” in the hopes they can “track” the missing matriarch’s pacemaker signal.

“The helicopters fly low, typically in grid patterns, at a slow pace to pick up signals,” the report reads, adding that the outlet “spotted one of the low-flying helicopters near Guthrie’s home” three days after she was reported missing though it is not known if the bird was fitted with the scanner at that time.

Pima County Sheriff Chris Nanos offered a grim update on the ongoing search for Nancy, who was initially reported missing on February 1. (Nancy shared daughters Savannah and Annie Guthrie and son Camron Guthrie with Charles Guthrie, who died in 1988 after a heart attack.)

“Maybe it’s an hour from now,” Nanos told The New York Times on Friday, February 13, of the ongoing efforts to locate Nancy, adding that 400 people have been assigned to the case and investigators are “looking hard.”

“Maybe it’s weeks or months from now,” he continued of a potential timeline associated with finding the missing mom. “But we won’t quit. We’re going to find Nancy. We’re going to find this guy.”

That same day, multiple SWAT, forensic officers and law enforcement vehicles were spotted in Nancy’s neighborhood, according to CNN and NewsNation. CNN reported that officers were seen focusing their efforts on two specific locations, though no arrests were made in connection with the case. Authorities did reportedly question a man about his apparent involvement, but he was ultimately released.

“We may see a couple more of these as this goes on,” CNN Chief Law Enforcement and Intelligence Analyst John Miller told the outlet, further speculating that the case will likely pick up speed because there’s a “victim in the balance.”

“I think we saw that again last night,” he added, “but this particular lead is not going to go any further.”

A representative for the Sheriff’s department also confirmed that there had been “law enforcement activity” in the area on Friday related to Nancy’s potential kidnapping case.

“Because this is a joint investigation, at the request of the FBI, no additional information is currently available,” the statement read via X. “There is no press briefing scheduled for tonight regarding the Nancy Guthrie investigation.”

Related: Pima County Sheriff Details Clues That Nancy Guthrie Is in ‘Danger’ 

Pima County Sheriff Chris Nanos has revealed that after learning more about the scene of the crime, he concluded Savannah Guthrie‘s mom, Nancy Guthrie — who’s been missing since Saturday night — is in danger. “We don’t want anybody to lose hope,” Nanos told Us Weekly exclusively on Monday, February 2. “But in the same […]

Savannah, meanwhile, has remained absent from the Today show studio as the search for her mother continues, issuing several public pleas amid her time away from the morning talk show. (Savannah also withdrew from 2026 Winter Olympics coverage amid her mother’s disappearance.)

“Mommy, if you are hearing this, you are a strong woman,” Savannah said alongside her siblings in one upload shared via social media. “You are God’s previous daughter, Nancy. We believe and know that even in this valley, He is with you. Everyone is looking for you, Mommy, everywhere. We will not rest.”