The desperate search for Nancy Guthrie, the mother of Today show cohost Savannah Guthrie, is nearing the end of its eighth week, with no significant breakthroughs.

Her family issued a new public appeal Saturday, asking Tucson, Ariz., residents to review home security footage, text messages and personal notes for anything that might help investigators.

"It's possible a member of this community has information that they do not even realize is significant," the family said in a statement to KVOA in Tucson. "We hope people search their memories, especially around the key timelines of January 31 and the early morning hours of February 1, as well as the late evening of January 11."

Investigators have previously asked neighbors about Jan. 11, nearly three weeks before Guthrie disappeared, but authorities have not said why the date is significant.

The Pima County sheriff and the FBI have not publicly named a suspect or a motive for the apparent abduction. Harry Trombitas, a former special agent for the FBI, told Yahoo that authorities are likely to “continue as long as there is an investigation to conduct.”

Trombitas said that while the motive could be for ransom, it's “appearing less and less” likely.

“There’s too much involved,” he said. “There are too many ways people can get caught.”

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

Nanos added in the interview that they remain hopeful that the “mixed” DNA found at Nancy’s house will lead investigators to “somebody.”

Investigators are also analyzing additional images recovered by the FBI from security cameras at Nancy Guthrie’s home in Tucson, Ariz., according to ABC News.

The images were recovered in recent weeks from motion-activated cameras that covered the pool, backyard and side yard of the property. The images are only thumbnails, and no video has been recovered from the cameras.

The photos captured people in the yard area during an unspecified time period before the abduction, but nothing appeared suspicious, ABC News reported, citing sources briefed on the investigation. The cameras also caught police officers on camera after the kidnapping, but there were no images taken the night of Nancy Guthrie’s abduction.

The Pima County Sheriff's Department said in a statement last Friday, “At this time, we will not comment on the details or status of this analysis.”

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.

Savannah Guthrie shared her family's statement on Instagram Sunday morning, amplifying their appeal to the Tucson, Ariz., community.

"Someone knows how to find our mom and bring her home," she wrote. She also posted an image of a religious painting with the words "I believe, I believe."

Nancy Guthrie's family issued a new public appeal Saturday, asking Tucson, Ariz., residents to search their memories and home security footage for anything that might help investigators.

"It's possible a member of this community has information that they do not even realize is significant," the family said in a statement to KVOA in Tucson. "We hope people search their memories, especially around the key timelines of January 31 and the early morning hours of February 1, as well as the late evening of January 11."

The family asked residents to review "camera footage, journal notes, text messages, observations or conversations that in retrospect may hold significance." They added: "No detail is too small. It may be the key."

Federal investigators have secured video from an Uber ride Nancy Guthrie took on the evening of Jan. 31, hours before she disappeared from her Tucson, Ariz., home, NewsNation reported.

The driver handed over all footage from inside the car to the FBI. Investigative reporter Dave Mack said on Crime Stories with Nancy Grace that authorities found nothing notable. "They found nothing of substance of anything of Nancy Guthrie in the vehicle, anything she said, her demeanor, nothing was mentioned," Mack said.

Investigators are looking closely at the security gate on Nancy Guthrie’s front door, which is nearly impossible to break through from the outside, NewsNation reported on Thursday. That’s why some law enforcement officials believe there was a second person already inside Nancy Guthrie’s home when a masked person was seen in the doorbell camera surveillance video shared by the FBI.

Investigators are looking into a theory that the masked person was waiting on the outside to help an accomplice get Guthrie out the front door.

NewsNation’s Brian Entin reports that the FBI has returned to the neighborhood to ask residents about some former neighbors who moved out shortly before Guthrie’s disappearance.

Entin spoke to a resident of the area who said a friend of hers has a house under construction, and FBI agents asked them to give the names of construction workers and contractors who have been working on the home.

The investigation into Nancy Guthrie’s disappearance is in its seventh week. The Pima County Sheriff and the FBI have not publicly identified a suspect or a motive, although Sheriff Chris Nanos told NBC Nightly News last week that investigators believe they know why Nancy Guthrie’s home was targeted.

Former FBI special agent Harry Trombitas told Yahoo that while the motive could be for ransom, it's “appearing less and less” likely. “There's too much involved,” Trombitas said. “There are too many ways people can get caught.”

Despite Hollywood movies depicting high-stakes kidnappings for ransom, they’re pretty uncommon in the United States and have “really decreased over the years,” he said.

While the FBI tracks kidnapping and abduction cases broadly in the U.S., there is no publicly available data broken down for ransom-specific cases.

“[The motive] could be for revenge of some type, anger, or it could be for a third purpose that we're just not even aware of,” Trombitas explained.

Read more from Yahoo: Nancy Guthrie's disappearance: Former FBI special agent says it appears 'less and less' likely that the motive for her apparent abduction was ransom

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.

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.

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.

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.

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.”

DNA analysis of genetic material pulled from a pair of black gloves found two miles from Nancy Guthrie’s home led back to a local restaurant worker who is not connected to the case, the Pima County Sheriff’s Department said on Wednesday.

In mid-February, the sheriff’s department said that DNA from the gloves did not match any entries in the FBI’s national genetic database.

The department told local media that it found a total of 16 pairs of gloves in the area around Guthrie’s house, most of which were later traced back to members of search teams.

Pima County Sheriff Chris Nanos believes that investigators are “definitely closer” to identifying a suspect or suspects in the case of Nancy Guthrie’s disappearance, he told NBC in an interview that aired on the Today show on Tuesday.

Nanos said that a dedicated team from his department’s homicide unit is working with the FBI and investigating the case under the presumption that Nancy Guthrie is still alive. He said they’re continuing to pursue thousands of leads.

“I think the investigators are definitely closer,” Nanos said.

During the interview, Nanos was asked about a neighbor’s doorbell camera video, obtained by Fox News Digital. The video shows a car speeding past the neighbor’s house, about 2.5 miles away from Nancy Guthrie’s home, at 2:36 a.m. on Feb. 1, just hours before she was reported missing.

“Look, what I would tell you is this: We’re aware of it, and we’re looking into it, just like any other piece of evidence,” the sheriff said, adding that authorities have not been able to identify the car yet.

“We’re looking at that vehicle as well as hundreds of thousands of other vehicles that were out driving that time of day,” he said.

When asked about the mixed DNA found at Nancy Guthrie’s home, Nanos suggested that it might be a mixture of DNA from several people. Experts say it can be difficult to extract the DNA profile from one person in these mixtures.

On Feb. 13, Luke Daley was detained for several hours by Pima County sheriff’s deputies and was questioned by the FBI in connection with Nancy Guthrie’s disappearance. For the first time since being detained and cleared, Daley is speaking out in an interview with Briana Whitney, a true crime correspondent for Arizona’s Family, saying he had nothing to do with Nancy Guthrie’s disappearance.

“It’s not me,” Daley said, referring to the masked person in the FBI-released doorbell camera video. “I don’t see the resemblance of it looking like me.”

He said he doesn’t know who is involved in Guthrie’s disappearance, and if he did, he would “happily” tell the authorities.

Daley said that on the night he was detained, he was driving home in his Range Rover when two sheriff’s cars pulled him over and told him to get out of the vehicle, before cuffing him and detaining him for about four to five hours. When he asked what he was being detained for, they didn’t tell him.

Daley said he just learned that Nancy Guthrie lived nearby and has never met her. He said he knew who she was only because his mom was following the case. Authorities towed his Range Rover for a search, which he ultimately got back. They also took his cellphone for a search, which he still hasn’t gotten back. In the meantime, a SWAT raid was being conducted at his home.

“The worst part was my mom not being there,” Daley said, adding that she has health issues. “I’m thinking the worst.” Without a cellphone, he couldn’t get in touch with her but discovered the next day that she had gone to a neighbor’s house.

Daley has called the ordeal a “nightmare” and feels like he can’t go out in public. He said he just wants Nancy Guthrie to return home safely and for his name to be cleared.

Savannah Guthrie visited a memorial outside of her mother’s home in Tucson, Ariz., on Monday, marking one month since Nancy Guthrie disappeared. Savannah was joined by her sister Annie and her brother-in-law, Tommaso Cioni. The three were seen hugging one another as they added flowers to a growing tribute near Nancy Guthrie’s mailbox.

It’s been nearly a month since Nancy Guthrie was reported missing from her home near Tucson, Ariz. Police believe that Guthrie, the 84-year-old mother of Today show cohost Savannah Guthrie, was abducted.

Jan. 31

Nancy Guthrie is last seen around 9:45 p.m. when she is dropped off by her family at her home in the Catalina Foothills north of Tucson, Ariz., after having dinner with her daughter, Annie Guthrie, who lives nearby.

Feb. 1

Nancy Guthrie’s pacemaker stops syncing with her Apple devices at 2:28 a.m., according to police. She is reported missing around noon after she did not show up at a friend’s house to watch an online church service.

Feb. 2

Pima County Sheriff Chris Nanos says police believe Nancy Guthrie was kidnapped and didn’t leave her home on her own.

Feb. 4

Nancy Guthrie’s adult children post an Instagram video addressing a possible ransom video, saying that the family is ready to talk but needs proof that their mother is alive.

Feb. 10

The FBI releases video and images of what it said was an “armed individual” appearing to tamper with a doorbell camera at Nancy Guthrie’s home in the early morning hours of Feb. 1.

Authorities detain and later release a delivery driver after carrying out a “court-authorized search” of his Rio Rico, Ariz., home. He tells reporters: “I hope they get the suspect, because I'm not it.”

Click here for a full timeline of key developments in the investigation.

The Pima County Sheriff’s Department has announced that it is refocusing its resources to detectives specifically assigned to the Nancy Guthrie case.

“This remains an active investigation and will continue until Nancy Guthrie is located or all leads have been exhausted,” the sheriff’s department said in a case update on Friday, adding that “resource allocation may fluctuate” in the search for Guthrie, who was reported missing on Feb. 1.

Police confirmed reports that investigators “actively reviewing surveillance video of vehicles traveling in the Catalina Foothills area,” including footage of a vehicle taken from a Ring camera about 2.5 miles away from Guthrie’s home.

The sheriff’s department said it has “asked homeowners in the surrounding community to submit any relevant footage and encourage anyone who has not yet done so” through a dedicated link on its website.

Days after announcing her family's $1 million reward for information leading to their mother's "recovery," Savannah Guthrie shared a video on Instagram Friday of a Today show report about how to submit an anonymous tip to the FBI.

"Please — be the one that brings her home," Guthrie wrote in a caption. "Tips can be anonymous, reward can be paid in cash, as explained here."

Despite receiving tens of thousands of tips, law enforcement officials have expressed concern that there may be people reluctant to contact the FBI out of fear their identity will be compromised in such a high-profile case.

Savannah Guthrie has been absent from the Today show since her mother was reported missing on Feb. 1. The grueling weeks-long search for Nancy Guthrie has led to speculation that Savannah may not return to NBC’s long-running morning show.

Citing two unnamed network sources, CNN reported on Thursday that Guthrie “intends to return to work” at the Today show “at some point.”

When that will happen remains unclear. Hoda Kotb, who departed the Today show early last year, has been filling in as cohost in Guthrie’s absence.

As the search for Nancy Guthrie nears the one-month mark, the FBI continues to analyze thousands of hours of video footage it has amassed since the investigation into her disappearance began.

NBC News reports that among the estimated 10,000 hours of video is Ring camera footage — obtained by Fox News Digital — of a car driving about 2.5 miles from Guthrie’s home, possibly en route from the crime scene, around 2:30 a.m. on the morning she was reported missing.

Investigators are also continuing to evaluate tips. After Savannah Guthrie posted a new video to Instagram earlier this week announcing the family’s $1 million reward for information leading to Nancy Guthrie’s “recovery,” an official told ABC News that the bureau received roughly 1,500 tips. According to CNN, more than 750 of those tips were deemed “credible.”

Elizabeth Smart, a kidnapping survivor turned activist and subject of a recent Netflix documentary, was asked in a podcast interview whether she is "triggered" by the Nancy Guthrie case.

"I'm not triggered by it," Smart said on the "Ladygang" podcast Wednesday. "But I know like what law enforcement will tell you: If a person disappears and they're not found within the first 24 to 48 hours, the chances of their survival drop down to almost 0%. I mean, it's, it's almost like they're dead. But I just always feel like we, we can't give up, because if that was the mentality around my case, then I wouldn't be here today."

Smart was abducted from her home in 2002 at age 14 and rescued nine months later, after people recognized her captors, Brian David Mitchell and Wanda Ileen Barzee, from an America's Most Wanted episode about her disappearance.

"I mean, I did come back, and there are other victims who do come back," Smart said. "And so even though every passing day feels like we're losing more and more hope or seems like it's less likely that she'll be found. I think we just have to remind ourselves that we can never give up. We need everybody's help. We need everyone to keep their eyes open and that someone will see something. Someone does know something. And if we stay alert and we stay aware and we don't just think, 'Oh, well that seemed kind of strange. But if that really is strange, someone else knows more than me.' Don't hesitate. Don't think that. Just pick up the phone, call law enforcement, tell them what you know, tell them what you see. And because you never know — what is the worst thing that can happen? The worst thing that can happen is that you're wrong.

She added: "That's not a big deal. I'd rather be wrong than keep my eyes closed to a crime happening."