An expert analysis points to one detail investigators uncovered that could suggest the missing 84-year-old was alive when she was taken.

In the ongoing investigation into the disappearance of 84-year-old Nancy Guthrie, mother of Today show co-anchor Savannah ...

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Authorities searching for 84-year-old Nancy Guthrie in Arizona are turning to new and unconventional methods in early ...

As the search for Nancy Guthrie continues, authorities are exploring innovative methods to locate her. Dr. Laurence Epstein, System Director of Electrophysiology at Northwell Health, provided insights ...

P RINTED ON TREADMILLS and exercise bikes in gyms around the world is a simple method for estimating the maximum rate at ...

An expert tells PEOPLE why pacemakers have Bluetooth technology, and how it can help locate Savannah Guthrie’s missing mother Nathan Congleton/NBCU Photo Bank/NBCUniversal via Getty The Bluetooth ...

Add Yahoo as a preferred source to see more of our stories on Google. As people follow Nancy Guthrie's disappearance, people are wondering how investigators are using her pacemaker to find her.

The Pima County Sheriff's Department previously highlighted the significance of Nancy’s pacemaker in the investigation, revealing additional details about its role in an approximate timeline of her ...

The “ethical hacker” who created the Bluetooth “signal sniffer” being used to try to track Nancy Guthrie’s pacemaker said he created the high-tech tool specifically for the search for the missing ...

They’re searching for Nancy Guthrie’s heartbeat. Cops are flying over the Tucson desert with a high-tech Bluetooth signal detector, also known as a signal sniffer, in an attempt to locate a signal ...

Authorities deploy bluetooth 'signal sniffer' in search of Nancy Guthrie's pacemaker Fox News correspondent Alicia Acuna reports the latest developments in the disappearance of Nancy Guthrie as the ...