One hundred days after 84-year-old Nancy Guthrie vanished from her Catalina Foothills home in what investigators believe was a violent abduction, the sheriff leading the case says detectives are inching closer to an answer — even as no suspect has been named and the trail has gone publicly quiet for weeks.

Pima County Sheriff Chris Nanos was approached by FOX News Digital outside his department on Saturday and asked directly whether his investigators were close to cracking the case. “We are,” he replied, declining to elaborate. The two-word answer was the most pointed signal yet that authorities believe they are gaining ground in a case that has gripped Tucson, Arizona, and rattled millions of viewers who know Nancy Guthrie as the mother of NBC’s Today show co-host Savannah Guthrie.

Nanos has acknowledged he has a theory about the motive but has not shared it publicly. No suspect has been identified. And there is still no evidence indicating whether Nancy Guthrie is alive.

A Quiet Saturday Night, Then Silence

Nancy Guthrie was last seen at her residence near East Skyline Drive and North Campbell Avenue on the evening of January 31, 2026. She had eaten dinner that evening with her daughter Annie Guthrie, a poet married to AP biology teacher Tommaso Cioni. When she failed to appear for a virtual church service the following morning, February 1, friends grew concerned. She was reported missing that day.

Inside the home, investigators found what they did not want to find: drops of blood, her phone, and the heart medication she takes daily. DNA from an unknown individual was recovered inside the residence. More blood was found on the front steps. Authorities concluded she had been taken against her will.

The clearest window into what happened that night came from her own home security system. A Ring Doorbell camera captured video of a male intruder. A Nest camera recorded a masked man on the doorstep who appeared to be carrying a stuffed backpack and a holstered handgun. The FBI later released footage of an armed suspect tampering with the front doorbell camera. Investigators describe the man as between 5 feet 9 and 5 feet 10 inches tall, of average build, and carrying a 25-liter Ozark Trail Hiker Pack.

One unusual piece of evidence has helped frame the timeline: Nancy Guthrie’s pacemaker, which lost its connection to her smartphone, gave investigators a narrow window for when she was likely seized.

The 100-Day Mark and a Reward That Keeps Growing

Despite the volume of digital evidence — cell tower data, roadside surveillance, security camera footage, and forensic material still being processed by labs — the case has not produced a public update in several weeks. Volunteer search groups have shut down their operations.

In a statement issued this week, the Pima County Sheriff’s Department sought to reassure a frustrated public. “As we reach the 100-day mark in this investigation, scientific evidence processing and digital media analysis remain ongoing,” the office said, adding that detectives continue to pursue fresh leads and tips alongside the established evidence.

A reward of more than $1.2 million is on the table for information that leads to a resolution — one of the largest sums ever assembled in an Arizona missing-persons case.

A Family’s Mother’s Day Plea

While investigators work behind closed doors, Nancy Guthrie’s family has refused to let her story fade. On Sunday — Mother’s Day — Savannah Guthrie posted a montage of videos and photographs of her mother on Instagram, paired with a wrenching tribute.

“Mother, daughter, sister, Nonie — we miss you with every breath. We will never stop looking for you. We will not be at peace until we find you,” she wrote, before urging anyone with information to contact federal authorities at 1-800-CALL-FBI and reminding the public that tips can be submitted anonymously.

Nancy Guthrie’s three children — Savannah, Annie, and retired military colonel Camron Guthrie — have remained publicly unified throughout the ordeal. Savannah Guthrie is married to Mark Feldman; Annie to Cioni. Together they have anchored a campaign that has stretched from Tucson living rooms to national morning television.

Political Turbulence Around the Sheriff

The investigation has unfolded against a turbulent political backdrop for Nanos himself. A recent move to oust the sheriff failed, though Pima County supervisors voted to refer perjury allegations against him to the state attorney general’s office. Nanos has continued to lead the Guthrie investigation through the controversy, insisting his focus remains on bringing Nancy Guthrie home.

For now, the case rests in a fragile balance — a sheriff who says he is closing in, a family that refuses to stop asking, and a masked man on a doorstep whose identity remains, 100 days later, unknown.

Anyone with information is asked to call 1-800-CALL-FBI.