In the ongoing investigation into the disappearance of Nancy Guthrie, Sheriff Chris Nanos of Pima County has confirmed that no new suspects are currently being considered. The investigation is facing complications due to mixed DNA samples found at the 84-year-old’s residence in Arizona, which are being analyzed by the lab currently used by his department.

“The investigation continues to grow in terms of leads and outreach,” Nanos stated during an interview with “NBC Nightly News” that aired on Saturday, indicating that efforts to solve the case are still expanding.

These comments seem to contradict local business reports claiming that the FBI has presented them with a list of names and images related to the case.

The usefulness of the DNA evidence collected from Guthrie’s home remains uncertain at this stage of the investigation.

Nanos explained that the DNA samples are complex because they contain genetic material from multiple individuals, which complicates the process of comparing them against national databases.

“Our laboratory has informed us of the difficulties involved,” Nanos mentioned regarding the Florida lab his agency is utilizing. “With advancements in technology progressing rapidly, they anticipate that some of these issues may be resolved in the coming weeks, months, or perhaps within a year.”

The sheriff noted that investigators were still working other avenues of the weeks-long probe into Guthrie’s abduction. 

“I think we’re getting a little closer to identifying some of the other articles, not just that backpack. Like the shoes, the pants, the shirt or jacket,” he said. 

Guthrie was last seen on the night of Saturday, Jan. 31, 2026, after being dropped off at her home in the Catalina Foothills area near Tucson. 

“It’s never fast enough for the Sheriff,” Nanos said of the criticism of his office weeks after Gutherie’s disappearance, with no arrests made. “I want it like you. Come on, guys, let’s go. Let’s go, let us find her. But the reality is, I also know that sometimes things take time.”

“We’re not quitting,” he added. “We’ll find her.”

Fox News Digital’s Michael Ruiz contributed to this report.