Nancy Guthrie
Nancy Guthrie

TUCSON, Ariz. — Five months after Nancy Guthrie vanished from her Tucson home, leaving behind her medication, wallet and cellphone, federal investigators are still pursuing the case as a kidnapping for ransom, one arrest has been made in connection with fraudulent communications, and experts outside the investigation are increasingly skeptical that any of the ransom notes publicly reported so far are genuine.

The 84-year-old mother of "Today" show co-anchor Savannah Guthrie disappeared in the early hours of February 1 after being dropped off at her Catalina Foothills home the previous evening. Blood found on her front porch was confirmed by DNA testing to belong to her. Surveillance footage recovered from corrupted camera data showed a masked individual tampering with her doorbell camera that night. Her pacemaker app disconnected from her phone at 2:28 a.m., a timestamp investigators believe may correspond to when she was forcibly removed from the home.

Despite that physical evidence, no suspects or persons of interest have been publicly named in connection with the actual disappearance, and the investigation now enters its sixth month without a confirmed account of what happened or where Guthrie is.

Criminal defense attorney and trial lawyer Mark Geragos told NewsNation's "Cuomo" program that he believes the FBI has consolidated its control over the investigation and that any breakthrough is most likely to come from inside the alleged criminal network rather than from external tip lines or media pressure.

"The FBI now, I think, has pretty firm control over the investigation, and they believe at this point that if it's going to be solved, it's going to be solved by somebody who I always call a confederate or somebody who's going to give some information," Geragos said.

Criminologist Casey Jordan offered a blunter assessment of the ransom notes that have circulated through media channels since February, telling NewsNation she believes none of them are credible based on a fundamental absence of verification.

"The No. 1 reason, and this is probably 90% of it, is that nothing, no communication is offered, any proof of life, proof of death, evidence of anything," Jordan said.

She elaborated on why the absence of verifiable details undermines the notes' credibility even when they contain accurate-sounding information about the case.

"The bottom line is, whatever they're mentioning that we know of is stuff they could have just learned online or picked up from AI and, you know, the satellite images of the scene and everything else. So, without any proof of life or death, there is no reason to believe that they're real. But I agree with Mark, the FBI is just kind of hedging their bets," Jordan added.

The FBI itself struck a careful balance in its most recent public statement on the ransom notes, declining either to fully authenticate or entirely dismiss the body of communications it has received.

"The FBI and its task force partners have received several ransom notes over the course of this investigation. Some have been deemed to be extortion attempts without legitimacy. Other ransom demands may potentially be legitimate and are still being investigated as such. This case continues to be investigated as a kidnapping for ransom case. The FBI has and will continue to offer all assistance possible in the investigation — however, local authorities remain the lead," the agency said.

The one concrete enforcement outcome from the ransom note investigation came Thursday, July 2, when Derrick Callella, 42, of Hawthorne, California, pleaded guilty to two counts of harassment using a telecommunication device. The U.S. Attorney's Office for the District of Arizona confirmed the plea, which addressed Callella's decision to call and text members of the Guthrie family on February 4, just days after Nancy's disappearance, demanding a Bitcoin transfer in exchange for information about her return. Callella acknowledged in his plea that he knew an earlier ransom demand had already been made and that his goal was to harass the family and attempt to extract details about the investigation rather than to provide genuine information. He faces a maximum of two years in federal prison and a fine of up to $250,000 at a sentencing scheduled for September.

The broader chronology of communications in the case is complicated. Tucson television station KOLD-TV received two notes, one demanding millions in Bitcoin for Guthrie's safe return and another claiming she had died. Entertainment outlet TMZ separately confirmed it had received a ransom note and subsequently reported receiving additional emails from what appeared to be the same sender. The FBI said its anonymous official's earlier characterization to Reuters, which suggested all three widely publicized notes had been deemed fraudulent, was an incomplete representation of the bureau's actual assessment, which distinguishes between notes fully dismissed as extortion attempts and others still under active investigation. Pima County Sheriff Chris Nanos had already expressed skepticism about the most recent TMZ note publicly, calling it consistent with the pattern of fake ransom demands the FBI had seen throughout the case.

The Callella guilty plea is the only confirmed criminal outcome so far. FBI special agent Heith Janke had disclosed at a February 5 press conference that someone had been arrested for sending an "imposter ransom demand" to family members, with Callella having initially pleaded not guilty before changing his plea this week.

The investigation has produced several pieces of physical evidence without leading to a named suspect. Blood confirmed as Nancy Guthrie's was found on her front porch. A strand of hair was recovered inside the home. DNA from a glove found roughly two miles from the property failed to match any profile in the FBI's national CODIS database, prompting investigators to pursue genetic genealogy testing. A separate human bone found near the property in May was ruled unrelated to the case. The masked individual seen on doorbell footage remains unidentified.

The Guthrie family's combined reward for information remains at $1.1 million, covering both a $1 million family pledge and the FBI's existing $100,000 offer. Savannah Guthrie has continued anchoring "Today" during much of the investigation while making periodic on-air appeals for public assistance, most recently describing the experience as "five months of agony and unending trauma" for her family as the investigation shows no sign of imminent resolution despite the substantial evidence collected and the federal resources deployed since February 1.