Jennifer Gould

Martin spoke to Fox News.

Investigators demanded a deep dive into electronic sales records from the past year.

desperately searching for a match to the armed Phantom caught on doorbell footage tampering with a Nest camera at Nancy's front door.

While Martin found no hits in his system, the FBI confirmed to him they are canvassing every weapon dealer in the region to ID the gunman who snatched the mom of Today co-host Savannah Guthrie on February 1st.

The clock is ticking on a forensic nightmare that began at 2.28am inside Nancy's Tucson estate when her pacemaker suddenly lost connection to a phone app, a haunting digital heartbeat that went silent

just minutes after her Nest camera was manually disconnected.

The suspect, a male standing 5'9 to 5'10 with an average build and facial hair, was captured on film wearing a black ski mask, a zip-up fleece, and a 25-liter Ozark Trail hiker pack,

believed to be purchased from Walmart.

Retired Pima County Lieutenant and SWAT Commander Bob Krieger spoke to CBS News.

The FBI is now working with Walmart and other retailers to track the specific purchase history of the items, including a holster seen on the suspect's hip, his gear, and that backpack.

Despite the kidnapper brandishing a firearm in the footage, DNA recovered from a pair of gloves discarded two miles away yielded zero matches in the FBI's National CODIS database, forcing agents to pivot to the high-stakes canvassing of gun registries.

As the hunt intensifies, federal teams have

contacted Mexican law enforcement reportedly, fearing Nancy may have been taken across the border via unmonitored desert routes.

With a now $200,000 reward on the table from the FBI and Crime Stoppers, if you have any information, contact 1-800-CALL-FBI or the Pima County Sheriff's Department at 520-351-4900.

More crime and justice news after this.

A quiet night of food delivery orders in Salem, Oregon, spiraled into a cross-state bloodbath when 62-year-old Daniel Ray Myers allegedly transformed his silver Honda Civic into a rolling torture chamber.

Myers lured a woman to a secluded gravel patch in West Salem under the guise of work before launching a predatory sexual assault.

When the victim fought back with everything she had, Myers reportedly drew a blade, stabbing her multiple times in a frenzied rage.

As the woman bled out in the passenger seat, Myers refused to let her free until she used the ultimate survival tactic,

She negotiated with her own executioner, displaying ice-cold composure while suffering from multiple puncture wounds.