More than 100 days after 84-year-old Nancy Guthrie vanished from her Catalina Foothills home, Pima County Sheriff Chris Nanos told reporters he expects the investigation to end in handcuffs, while acknowledging that his department is deliberately withholding information from the public.

"I believe, at some point in time, we will make an arrest on this case," Nanos told KOLD News 13 on Monday, May 11, as InTouch reported. "And whoever that individual is, that individual will have a right to a fair and impartial trial."

The sheriff's confidence will be cold comfort to a family that has spent more than three months pleading for answers, and to a local community that, by at least one account, is already starting to look away.

What investigators will and won't say

Nanos was blunt about the pace of the probe. He said his department and the FBI are "not going to give up on it just because it's been 100 days." Lab work continues on two fronts, he said, digital evidence and biological evidence, including DNA.

"We continue to work with our labs. Whether it's on the digital end or the biological end, DNA."

Asked whether authorities are keeping information from the public, Nanos did not hedge. "Yes, absolutely there are," he said. "But it's not done because we gotta keep it secret. It's done because we've got to protect our case."

That answer raises an obvious question: protect the case from whom? No suspect has been publicly named. No person of interest has been identified in any official statement. Yet the sheriff speaks of a future defendant's right to a fair trial as though an arrest is a matter of timing, not probability.

As we previously reported when the case hit the 100-day mark, the FBI lab has been processing DNA recovered from the Guthrie property, work that Nanos himself described as moving "at a snail's pace" for outsiders but proceeding as it should for his team.

"It moves at a snail's pace, I guess for some, but for my investigative team, and for me, we look at this as, no, this is doing exactly what we need it to do."

A friend's fear: the community is moving on

While law enforcement projects patience, the people closest to Nancy Guthrie are running out of it. Lauren Serpa, a close friend, told Page Six in an interview published Tuesday, May 12, that she worries the surrounding community has begun to lose interest.

"People are starting to move on basically. That's what happens when it doesn't affect their lives. So that's why I'm trying to keep it in the forefront as much as possible."

Serpa's concern is not unfounded. High-profile missing-persons cases often fade from public attention once the initial shock passes, and the absence of visible progress, no named suspects, no recovered victim, no public timeline of evidence, makes sustained attention harder to maintain.

Nancy Guthrie's daughter Savannah Guthrie, the well-known NBC News anchor, has made multiple public pleas for anyone with information to come forward. She has urged whoever may be responsible to bring her mother home.

The scene that raised early alarms

The circumstances of Nancy Guthrie's disappearance were alarming from the start. She was last seen at her Catalina Foothills home after being dropped off by her daughter Annie Guthrie and son-in-law Tommaso Cioni. The next morning, Nancy was supposed to attend a streaming church service but failed to show. A friend alerted the family.

Fox News reported that Savannah Guthrie described finding doors at the home open, one apparently propped, with blood on the front doorstep and the Ring camera yanked off. Nancy had disappeared in her pajamas, with no shoes and without her medication, despite limited mobility and significant pain. The family immediately suspected a kidnapping for ransom and recorded a video appeal to a possible abductor.

Retired Lt. Randy Sutton, a former law enforcement officer, told Fox News the initial scene handling raised concerns. "This should have been locked down immediately," Sutton said. He also questioned the authenticity of ransom notes the family received, citing the unusual way the messages were sent and the absence of any real negotiation. Savannah Guthrie disagreed. "I believe the two notes that we received that we responded to, I tend to believe those are real," she said.

That disagreement, between a grieving daughter and a veteran investigator, captures the fog hanging over this case. The family sees a kidnapping. Some experts see red flags that don't add up. And the sheriff's department says trust us, but don't ask what we know.

Earlier reporting explored disputes over whether the Pima County Sheriff's Department initially resisted FBI involvement in the investigation, a dynamic that, if true, would make the current posture of interagency cooperation all the more notable.

Ransom emails and an international twist

The case took another strange turn when alleged ransom emails surfaced. The New York Post reported that an email sent to TMZ claimed several people were involved in Nancy Guthrie's abduction and that the primary individual may have left the United States. The sender wrote, "be prepared to go international," and claimed to know the abductor's identity and Nancy Guthrie's condition. The sender also raised the price for information from one bitcoin to the FBI's $100,000 reward, the increased bounty the FBI had already posted.

Investigators recovered unidentified DNA from Guthrie's property for lab analysis, and the FBI released a description of a male seen on a Nest camera at the home. Whether any of that evidence connects to the ransom emails, or to anyone at all, remains unknown to the public.

Theories about what happened to Nancy Guthrie have ranged widely. A private investigator has publicly raised the possibility of a cartel connection, while others have pointed to the proximity of the Tucson-area home to the southern border.

What the public still doesn't know

Sheriff Nanos's promise of an eventual arrest is the most direct statement any official has made about where this investigation is headed. But promises are not evidence, and confidence is not closure.

The list of unanswered questions is long. No one has publicly confirmed the exact date Nancy Guthrie was last seen. No suspect or person of interest has been named. The nature of the withheld information is unknown. The ransom notes remain unverified. The DNA results have not been disclosed. And an 84-year-old woman with limited mobility, no shoes, and no medication has not been found.

As we reported when the sheriff first said investigators were getting closer, the gap between official optimism and public evidence has been a defining feature of this case from the beginning. Nanos has asked the public to trust the process. The family has asked the public not to forget.

Anyone with information is urged to contact the FBI at 1-800-CALL-FBI (1-800-225-5324) or submit a tip online at tips.fbi.gov.

A hundred days is a long time for an 84-year-old woman to be missing. It's an even longer time for a sheriff to ask a family, and a community, to take his word that justice is coming, while telling them almost nothing about why they should believe it.