Pima County Sheriff Chris Nanos said investigators believe they know why Nancy Guthrie’s home was targeted — and didn’t rule out the possibility that her kidnapper could strike again.

“We believe we know why he did this, and we believe that it was targeted,” Nanos told NBC Nightly News in an interview that aired on Thursday. “We’re not 100% sure of that, so it would be silly to tell people, ‘Yeah, don’t worry about it, you’re not his target.’

“Don’t think for a minute that because it happened to the Guthrie family, you’re safe. Keep your wits about you,” Nanos said.

The desperate search for Today cohost Savannah Guthrie’s mother is now in its sixth week. The FBI has recovered security camera images from Nancy Guthrie’s property, according to ABC News, though no video footage was recovered. Nanos added in the interview that authorities remain hopeful that the “mixed” DNA found at Nancy’s house will lead investigators to “somebody.”

The sheriff’s department is investigating whether a Wi-Fi jammer was used during a reported internet outage that occurred around the time Nancy Guthrie disappeared on Feb. 1, which disrupted nearby home surveillance cameras. Investigators are also looking at a damaged utility box around the corner from Nancy Guthrie’s home that could be connected to the outage.

There have been no significant breakthroughs in the search for Nancy Guthrie. The Pima County sheriff and the FBI have not publicly named a suspect, and her relatives have been ruled out as potential suspects.

The family of Nancy Guthrie, 84, is offering $1 million for information leading to her “recovery.”

Anyone with information is encouraged to call the Pima County Sheriff’s Department tip line at 520-351-4900 or the FBI tip line at 1-800-CALL-FBI.

Live111 updates

Jack Brewster

Jack Brewster

FBI recovers additional camera images from Nancy Guthrie’s home

The residence of Nancy Guthrie, where authorities believe she was abducted over a month ago in Tucson, Ariz.

The residence of Nancy Guthrie, where authorities believe she was abducted over a month ago in Tucson, Ariz.
(Anadolu via Getty Images)

The FBI has recovered additional images from security cameras at Nancy Guthrie’s Arizona home, according to ABC News. The cameras covered the pool, backyard and side yard of the property.

The images are thumbnails only — no video footage has been recovered. ABC News reported that the images captured people in the yard area before the abduction, but nothing appeared suspicious.

On Friday, the Pima County Sheriff’s Department said it “continues to analyze various forms of evidence in the Nancy Guthrie case, including material from laboratories as well as images and videos captured by cameras.”

“At this time, we will not comment on the details or status of this analysis,” the statement added.

Kate Murphy

Kate Murphy

Investigators believe they know why Nancy Guthrie was targeted

Pima County Sheriff Chris Nanos says investigators believe they know why Nancy Guthrie’s kidnapper targeted her home in the early hours of Feb. 1.

“We believe we know why he did this, and we believe that it was targeted,” Nanos told NBC Nightly News in an interview that aired Thursday. “We’re not 100% sure of that, so it would be silly to tell people, ‘Yeah, don’t worry about it, you’re not a target.’

“Don’t think for a minute that because it happened to the Guthrie family, you’re safe. No, keep your wits about you,” he added. “From day one, we had some strong beliefs about what happened, and those beliefs haven’t diminished.”

The desperate search for Savannah Guthrie’s mother is in its sixth week.

Kate Murphy

Kate Murphy

Investigators looking at possible connection between damaged utility box and reported internet outage

The Pima County Sheriff’s Department confirmed to NBC that it is investigating a damaged utility box located around the corner from Nancy Guthrie’s house. It could be connected to an internet outage reported around the time she disappeared in the early morning hours on Feb. 1, potentially disrupting the availability of video evidence from nearby home surveillance cameras.

Jack Brewster

Jack Brewster

Investigators looking into possible internet disruption near Nancy Guthrie’s home

Federal investigators are examining whether internet service disruptions in Nancy Guthrie’s Tucson, Ariz., neighborhood the night she vanished could be tied to the abduction.

Guthrie’s neighbors told NewsNation their home security camera footage from that night is missing or marked “not available,” and authorities have reportedly asked residents about unusual connectivity problems around Feb. 1.

Mike Bebernes

Mike Bebernes

Savannah Guthrie visits ‘Today’ studio, tells coworkers she plans to return to the show

Savannah Guthrie visits the Today show at Rockefeller Plaza on March 5.

Savannah Guthrie visits the “Today” show on March 5.
(Charles Sykes/Invision/AP)

Savannah Guthrie met with her colleagues in New York City on Thursday morning for a tearful reunion as the search for her mother continues into its second month. Photos from the studio show Guthrie wiping away tears, hugging her coworkers and receiving a kiss on the cheek from her Today cohost Hoda Kotb.

Guthrie hasn’t appeared on the show since Jan. 30, two days before her mother, Nancy Guthrie, was reported missing.

After the visit, host Jenna Bush Hager told the Today audience that Guthrie said she planned to return to the show but doesn’t have a timeline for when that might happen.

“She said that she has the intention to return to the show. Even though it feels like the hardest thing to do, it’s also her home and where she feels so loved,” Bush Hager said. “I don’t know when she is actually returning to the show, but she was here and that felt so good to get to hug her.”