Authorities investigating the suspected abduction of Nancy Guthrie have uncovered additional images from her home security cameras, according to law enforcement sources — but nothing new from the night of the abduction and nothing considered a major break in the case.

Guthrie is the 84-year-old mother of "Today" host Savannah Guthrie and has been missing from her home since the early hours of Feb. 1.

The images were taken in the days and weeks leading up to her disappearance and were recovered from three separate cameras — at Guthrie's front door, over her driveway and in the backyard, a law enforcement official close to the Guthrie case tells Fox News. There is no new video.

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A spokesperson for the Pima County Sheriff's Department declined to comment.

The images were first reported by ABC News and have not been made public. They were described to reporters by sources close to the case.

The revelation comes hours after Pima County Sheriff Chris Nanos told Guthrie's network, NBC, that the suspect could "absolutely" strike again and that there is a danger to the public.

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"We believe that it was targeted, but we can't — we're not 100% sure of that," he said in an interview that aired Friday morning. "And so it would be silly to tell people, 'Yea don't worry about it. You're not his target.' No, you could be."

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Guthrie was alone in her home in the Catalina Foothills, a wealthy enclave in northern Tucson, Arizona.

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Her front doorbell camera is missing, but other home security cameras were taken into evidence by the FBI.

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And although the FBI and Google were previously able to recover some footage from her front door showing a masked man with a gun, he has not been identified.

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DNA evidence has been inconclusive so far.

Separately, Nanos confirmed that investigators are looking into some kind of power or internet outage the morning of Nancy's abduction, but he said it was not connected to a utility box around the corner from the home showing signs of having been tampered with.

There's a combined reward of over $1.2 million for info that cracks the case.

The family is asking anyone with information to dial 1-800-CALL-FBI.

Iran is deploying explosive-laden drone boats disguised as wooden fishing vessels in the Strait of Hormuz, a defense expert has warned — a move that signals a new phase of hybrid maritime warfare in one of the world’s most critical shipping lanes.

Cameron Chell, CEO of drone technology firm Draganfly, spoke after the United Kingdom Maritime Trade Operations (UKMTO) confirmed that a Marshall Islands–flagged oil tanker was struck March 1 by an Iranian unmanned surface vehicle north of Muscat, Oman.

"UKMTO has received confirmation that the vessel was attacked by an uncrewed surface vehicle (USV), and that the crew has been evacuated to shore," UKMTO said in a threat assessment.

Reports also indicated that two additional oil tankers were hit March 11 by remote-controlled explosive boats in the Gulf, as Iran intensified attacks on foreign vessels following the start of the U.S. Operation Epic Fury against the regime on Feb. 28.

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The use of so-called "suicide skiffs" represents a growing asymmetric threat in the narrow, 21-mile-wide Strait, Chell warned, while highlighting the technological capabilities behind these attacks.

"The Iranians probably have use of radio remote control, line of sight, frequency hopping, or encrypted radio communication between the skiffs and the Hormuz shoreline," Chell told Fox News Digital.

"These can be jammed and tracked, but when there's 50 of these boats, it's hard to try to find them all along this shoreline or to find a 20-foot wooden fishing boat that is laden with explosives.

"They can have one person controlling a swarm of 10 boats," he said before describing how there "could also be autonomous swarming where they might have 10 boats that can act with a large level of independence, because they're pre-programmed."

"The boats would be used to ram into targets and explode," Chell clarified.

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Chell’s comments followed a March 12 Reuters report stating that six vessels had been attacked in the Gulf and Strait of Hormuz. 

Sources said that Iran had also deployed about a dozen mines, complicating efforts to maintain any traffic through the critical waterway.

U.S. Treasury Secretary Scott Bessent told Sky News Thursday that the U.S. Navy, potentially alongside an international coalition, would escort ships when militarily feasible.

U.K. Defense Secretary John Healey also said discussions were underway with European counterparts stressing the global economic stakes tied to the strait. Chell, however, questioned current defensive readiness.

"The drone defense fleets that the U.S. Navy would not have been set up to take these suicide skiffs out," Chell said.

"The U.S. would be using manned aircraft in order to take them out, which are fantastic at taking out a large target, but inefficient in taking out 50 boats at one time that are an average of 25 or 30 feet in size, laden with explosives.

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"Given the Strait's geography, it would require patrolling by many aircraft and would require pervasive surveillance over the area, a rapid response to any activity that's happening," he said.

As Supreme Leader Mojtaba Khamenei vowed to keep the Strait closed as leverage against the U.S. and Israel, oil prices continue to surge, with Chell also highlighting the geographic advantage Iran holds.

"The geographic layout of the Strait lends itself very well to relatively unsophisticated suicide skiffs, unmanned surface vehicles or USVs," he warned before describing how the area "lends itself to this low-cost, automatic, asymmetric warfare."

"The Iranians can disguise them as fishing boats and can be anywhere from 12 to 30 feet and a boat could be of any description," Chell said.

"These skiffs are equipped with basic remote control capabilities that may or may not be using GPS waypoints or manual remote control."

"The skiffs are not autonomous, because the distance across the Strait is so short, and it's very flat across this waterway, the communication signal could be carried for quite some time via a line of sight," he added.

"They could literally have hundreds out there at a time because they're also so inexpensive to defend against," Chell said.