The Pima County Sheriff’s Department said Friday that investigators are continuing to work with the Nancy Guthrie Task Force on DNA analysis as they pursue new leads in the missing-person case.
“Earlier this month, investigators traveled to Florida to meet with lab scientists to see what more could be done to advance this case,” the department said in a post on X. “A number of ideas were discussed, and we continue to work with all our partners to solve this case.”
The agency urged the public to report any information, emphasizing that no tip is insignificant.
“Even the smallest piece of information could be critical to this investigation,” the department said.
Nancy Guthrie, the mother of NBC journalist Savannah Guthrie, was kidnapped from her Tucson, Arizona, home on Feb. 1.
The 84-year-old was last seen shortly before 10 p.m. on Jan. 31, after a relative dropped her off at her home in Tucson’s Catalina Foothills neighborhood.
Despite footage from Guthrie’s Ring doorbell showing a masked man, authorities have not identified a suspect or person of interest in her disappearance.
Pima County Sheriff Chris Nanos confirmed in the days after Guthrie vanished that she had been taken. During a news briefing, he said, “She did not leave on her own. We know that.”
Authorities released two ransom notes tied to Guthrie’s kidnapping in July.
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The first note, sent Feb. 2, said Guthrie was unharmed and demanded $4 million in cryptocurrency for her release.
A second note, sent four days later on Feb. 6, claimed that Guthrie had died soon after being kidnapped.
When the ransom notes were made public in late July, authorities said they featured a distinctive writing style. They asked anyone who recognized the patterns to contact the Pima County Sheriff’s Department or the FBI.
Late last month, investigators said they had learned of a possible new ransom note connected to Guthrie’s disappearance.
“The PCSD/FBI Guthrie Task Force was recently made aware of a new possible ransom note related to the Nancy Guthrie investigation,” the sheriff’s department said in a late-September post on X.
“Investigators are also aware of social media comments regarding the note and are looking further into the information to determine its credibility.”
Anyone with information should call 1-800-CALL-FBI. Those wishing to remain anonymous can contact 520-88-CRIME.
Fox News’ Robert McGreevy contributed to this report.