Searching For Body with Specific Coordinates in the Desert | Nancy Guthrie Missing

Pima County Sheriff's Department enlisted a partner agency to take their signal sniffer to a specific location in a neighboring county's desert, guided by cell tower coordinates, with the explicit directive to 'look for a body.' Nancy Guthrie was not found at this location.

Host Ashleigh Banfield's law enforcement source confirmed the deployment and purpose of the signal sniffer.

After five weeks, the Pima County Sheriff's Department and FBI have scaled back the initial 400-agent response, refocusing resources into a dedicated task force comprising Pima County homicide detectives and FBI agents. This signifies a shift to a 'parallel investigation' strategy, simultaneously pursuing both rescue and recovery scenarios.

Michael Ruiz (Fox reporter) sources and a Pima County Sheriff's Department statement confirmed the shift in resources and the formation of a task force.

New information revealed that images of the offender on the doorbell camera were captured on two different days, indicating the perpetrator was 'casing the place' and checking out the target home prior to the abduction.

Law enforcement sources informed the host that images of the perpetrator on the Ring cam came from different days.

Nancy Guthrie's pacemaker continuously sends out 'advertisements' to connect with its devices. This signal is long-lasting, capable of transmitting for years, making the signal sniffer technology a viable tool for locating her, even if she is deceased.

Experts familiar with pacemaker technology and the signal sniffer confirm pacemakers continue to transmit for years regardless of the wearer's status.

Dr. Tracy Sergeant, a PhD in psychology and forensic search expert, applies offender profiling to investigations. She theorizes that if the perpetrator was surprised by Nancy Guthrie, his actions post-abduction would be panicked and unplanned, likely leading him to dispose of her or evidence in areas close to the crime scene, accessible by vehicle, and on the driver's side of the road.

Dr. Sergeant's explanation of 'walking in the shoes of the bad guy' and analyzing motive, panic, and logistical constraints for disposal.

Human remains detection (HRD) dogs can detect scent for hundreds of years, even in difficult environments like shifting desert sands or after evidence has been burned. They are more efficient and accurate than human searchers and can identify both where scent is present and where it is absent, aiding in elimination.

Dr. Sergeant's experience with HRD dogs, including finding soldiers on Revolutionary War battlefield sites and their ability to work effectively at night in hot, dry conditions.

While 'more eyes are better,' private civilian search parties risk interfering with professional investigations and contaminating potential evidence, compromising the chain of custody and hindering prosecution. Even well-intentioned actions, like finding and handling a backpack, can dramatically hamper a case.

Dr. Sergeant's discussion on the balance between public help and respecting investigative efforts, citing the critical importance of chain of custody for prosecution.