Nancy Guthrie's pacemaker stopped transmitting.

DNA recovered inside the home has now been confirmed as her DNA.

And just moments from now, the sheriff of Pima County, Chris Nanos, is expected to explain what all this means.

Welcome to the global phenomenon, Surviving the Survivor,

where we bring you the best guests in all of true crime.

Here's your host, Emmy Award-winning journalist Joel Waltman.

What's up, SDS Nation? Welcome to Survive and Survivor.

This is the global phenomenon, bringing you the very best guests in all of true crime.

We are standing by for a live press conference schedule for 1.30 p.m. Eastern time, as I said,

it will be helmed by Chris Nanos. He is the sheriff of Puma County. Of course, that is where Tucson, Arizona sits inside of Pima County.

Investigators really escalating their look at investigation into the disappearance of Nancy

Guthrie, the 84-year-old mother of Savannah Guthrie. Two real major developments. DNA inside the home now

confirmed to be Nancy Guthrie's. And apparently she has a pacemaker. And that pacemaker,

she wears, stopped transmitting data in the early morning hours, said to be around 2 a.m. in the overnight hours.

A detail investigators believe may help narrow the timeline of what happened.

Joining us now to put all this together, you've got the legendary Vegas homicide detective,

Phil Ramos, three-time officer of the year, was previously an undercover

narcotics. If you've heard about it or thought about it, Phil Ramos has seen it.

Next up, Troy Hillman, more local. He is a former CPA, as I understand it, then a law enforcement detective and a cold case expert working

with a Phoenix Police Department. He's also the author of chasing down the zombie hunter.

And he's coming to us live from Phoenix, Arizona. And last but not least, the other legendary homicide detective having investigated over

400 homicides with a clearance rate and a confession rate through the roof, Phil teaches

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