in search Nancy GuthrieToday Show host’s mother Savannah GuthrieNewsNation’s Brian Entin reports that investigators are using “signal sniffers” to try to detect Nancy’s pacemaker. Pima County Sheriff Chris Nanos told Fox News that no arrests have been made.
“Investigators used a so-called ‘signal sniffer.’ It was a small device that was delivered and attached to the Sheriff’s helicopter. It could detect Nancy Guthrie’s pacemaker signal. The helicopter had to stay low and move slowly to work,” Entin wrote on X .
The search entered its third week on Sunday, February 14, with a team awaiting forensic results from a late-night operation on Friday, which took place just a few miles from Nancy’s home. Four people were detained and later released after the FBI executed a federal search warrant at a home in Catalina Foothills, officials told Fox News Digital on Saturday.
Nanos, who was not present during the search, said no one was arrested and “no sign of Nancy was found.”
What is a “signal sniffer”?
A signal sniffer is a hardware or software device used to monitor, capture, and analyze data communications or electromagnetic signals. The device is used in special applications to track radio frequencies in special situations, such as when identifying a missing person’s pacemaker on a helicopter. It is also frequently used to monitor and troubleshoot packets on the network.
Signal sniffers are police’s latest hope in the Guthrie case. Authorities used equipment mounted on a helicopter to try to detect Nancy’s pacemaker, NewsNation reported.
Learn more | Nancy Guthrie suspect found? A manhunt is underway in Tucson, Pima County.
The technology was used on the skid of a Pima County Sheriff’s Department helicopter in Arizona, which was seen flying low over the Tucson area.
Former FBI agent Maureen O’Connell said the agency may use a variety of techniques to find Nancy. “Regarding this particular tool… I do know that pacemakers sound very short range alarms, or whatever, so they have to be very close,” O’Connell told NewsNation on Saturday.
What we know about Nancy Guthrie’s pacemaker
Nancy’s pacemaker stopped synchronizing Shortly after her disappearance, she used her Apple device. A law enforcement source previously told Fox News that the implanted medical device lost contact with Nancy’s Apple product around 2 a.m.
Hours later, authorities arrived at Nancy’s Arizona home around noon and found her phone and Apple Watch still inside, sources said.
Nanos previously told Us Weekly that Nancy’s disappearance was “difficult” for Savannah and her siblings, sister Anne and brother Camron. “They rely on each other,” Nanos said. “They’ve been very cooperative with us and everything we do.”
