Savannah Guthrie's Mom Nancy: Day 39, Six FBI Theories, and a Wi-Fi Jammer Investigation That Won't Let Go
Forty days. No arrest. No suspect named. And an investigation that keeps expanding the circle of what was planned — not just who did it.
Six Theories, One Dedicated Task Force
The FBI and Pima County Sheriff's Department are actively evaluating six theories in the disappearance of Nancy Guthrie: burglary gone wrong, ransom kidnapping, a professional hit, cartel or organized crime involvement, insider access by someone familiar with the property, and random opportunistic crime.
Sheriff Chris Nanos told NBC News he believes investigators are "definitely closer" to identifying a suspect or suspects, and confirmed a dedicated team from his department's homicide unit is working the case under the presumption that Nancy is still alive. "We've got a lot of intel, a lot of leads, but now it's time to just go to work," he said.
The Wi-Fi Jammer Theory Is Growing Stronger
The investigation's most technically significant thread centers on what happened to the neighborhood's internet the night Nancy vanished. The Pima County Sheriff's Department confirmed it is investigating a damaged utility box around the corner from her Catalina Foothills home, believed connected to a reported internet outage that disrupted nearby home surveillance cameras in the early hours of February 1.
Both the FBI and the Sheriff's Department went door to door in the neighborhood, specifically asking residents whether they noticed disruptions to their internet service that night. Several homeowners confirmed that agents told them multiple neighbors had reported connectivity problems.
Neighbors told NewsNation their home security camera footage from that night is either missing or marked "not available." Whether a jammer was used remains under investigation — but the pattern of missing footage across multiple homes is not easily explained by coincidence.
The Timeline, Laid Out
Nancy was last seen at her home in the Catalina Foothills after being dropped off by her son-in-law Tommaso Cioni at approximately 9:50 p.m. on January 31. She was reported missing the following morning after failing to join friends for a livestreamed church service, as she did most Sundays.
Surveillance footage captured a masked man at her front door at 1:47 a.m. — he disabled the doorbell camera. At 2:28 a.m., her pacemaker tracking app went offline. Blood found on her front porch was confirmed to be hers.
DNA Leads Cleared — Others Still Pending
DNA from a pair of black gloves found two miles from the home traced back to a local restaurant worker with no connection to the case. Of 16 pairs of gloves recovered in the area, most were traced back to members of search teams. Remaining gloves are still being tested at a private lab in Florida.
Mixed DNA found at Nancy's property continues to present challenges — the mixture may involve several individuals, making it difficult to extract a single usable profile. Some DNA has been submitted to the FBI's national database with no matches returned.
On February 10, a person of interest was detained during a traffic stop in Rio Rico, Arizona, roughly 60 miles south of Tucson. A search warrant was executed on a nearby property and vehicle. By February 11, searches had concluded and the individual was released without charges — Sheriff Nanos confirmed the person was not involved.
Savannah: Still Away, Still Watching
Savannah Guthrie returned to Studio 1A on March 5 for an unannounced visit — her first time on the Today set since her mother's disappearance. A Today spokesperson confirmed she plans to return to the show but remains focused on supporting her family and working to bring Nancy home. No return date has been set.
In an earlier video, Savannah addressed her mother's abductors directly: "We received your message, and we understand. We beg you now to return our mother to us so that we can celebrate with her."
The Guthrie family is offering $1 million for information leading to Nancy's recovery, on top of rewards from the FBI and Crime Stoppers. The FBI tip line is 1-800-CALL-FBI; the Pima County Sheriff's Department tip line is 520-351-4900.
