Detectives Use 'Signal Sniffer' in Search for Missing Savannah Guthrie's Mother

FBI increases reward to $100,000 as investigation continues into 84-year-old Nancy Guthrie's disappearance.

Published on Feb. 15, 2026

Got story updates? Submit your updates here. ›

As the search for Nancy Guthrie nears the two-week mark, a new report reveals that detectives are using a helicopter-mounted "signal sniffer" device to track the missing 84-year-old's pacemaker signal. SWAT also raided a home and detained individuals, though no arrests have been made. The FBI has increased the reward for information to $100,000.

Why it matters

The disappearance of Savannah Guthrie's mother has garnered national attention, with many following the case closely on social media. The use of advanced technology like the "signal sniffer" and the ongoing investigation highlights the lengths authorities are going to in order to locate Nancy Guthrie and determine what happened.

The details

Investigators have used a "signal sniffer," a small device attached to a sheriff's helicopter that can detect Nancy Guthrie's pacemaker signal. The helicopter has to stay low and move slowly for the device to work effectively. SWAT also raided a residence about two miles from Guthrie's Tucson, Arizona home, detaining a man and woman believed to be a mother and son, as well as a man from a nearby traffic stop. No arrests have been made, and the Pima County Sheriff's Department has been tight-lipped about the raid, citing the joint investigation with the FBI.

  • The search for Nancy Guthrie has been ongoing for nearly two weeks.
  • The SWAT raid occurred on Friday, February 14, 2026.
  • The FBI increased the reward for information to $100,000 on an unspecified date.

The players

Nancy Guthrie

An 84-year-old woman who has been missing for nearly two weeks in Tucson, Arizona.

Savannah Guthrie

The daughter of Nancy Guthrie and a well-known television news anchor.

Pima County Sheriff's Department

The law enforcement agency leading the investigation into Nancy Guthrie's disappearance, in coordination with the FBI.

Federal Bureau of Investigation (FBI)

The federal law enforcement agency assisting the Pima County Sheriff's Department in the investigation and increasing the reward for information.

Got photos? Submit your photos here. ›

What’s next

The judge in the case will decide on Tuesday whether or not to allow the detained individuals to be released on bail.

The takeaway

The use of advanced technology like the "signal sniffer" and the ongoing investigation by local and federal authorities highlights the complexity and high-profile nature of this missing persons case. The disappearance of Savannah Guthrie's mother has captured national attention, and the community remains hopeful for her safe return.