Savannah Guthrie’s mom Nancy’s pacemaker stopped syncing with her Apple Watch as disappearance timeline develops

Savannah Guthrie’s mom Nancy Guthrie‘s pacemaker stopped syncing with her Apple Watch early Sunday when she disappeared.

A law enforcement source told Fox News Digital that the 84-year-old’s pacemaker last synced with her Apple devices around 2 a.m. on Sunday.

“Investigators believe she was taken out of range around that time,” the outlet added.

The Public Information Officer for the Pima County Sheriff’s Office did not immediately respond to Page Six’s request for comment.

As Page Six previously reported, Nancy was last seen on Saturday night when her daughter Annie Guthrie dropped her off at home in Catalina Foothills, Ariz., following a dinner outing.

Relatives called 911 the following morning to report Nancy missing when she did not show up for church.

In a press conference Monday, Pima County Sheriff Chris Nanos revealed that her home was being treated as a “crime scene.”

“We believe now, after we process that crime scene, that we do, in fact, have a crime scene, that we do, in fact, have a crime and we’re asking the community’s help,” he said.

“[Nancy] did not leave on her own,” he shared, explaining that they believe the “circumstances on scene […] are suspicious in nature.”

Nanos urged the public to check their home security cameras to assist in the search and rescue missions.

“We need help,” he pleaded, noting that Nancy needs vital daily medication to survive.

A spokesperson for the Pima County Sheriff’s Department told Page Six that investigators believe Nancy was “taken from the home against her will, possibly in the middle of the night.”

“That includes possible kidnapping or abduction,” the spokesperson added.

The Los Angeles Times reported Tuesday morning that there were signs of forced entry and that authorities found blood inside Nancy’s residence but it’s unclear if it is hers.

Since Nancy went missing, Savannah, 54, has been “leaning on” her family members, including her siblings, Annie and Camron Guthrie.

“They’re leaning on each other,” Nanos told Us Weekly. “They’re very cooperative with us and everything we’re doing.”

Nanos said the “Today” show host and her loved ones are “involved and engaged” as the investigation into Nancy’s disappearance continues.

“It is tough, there’s no doubt,” he added.