Last seen alive on the night of Jan. 31, Nancy Guthrie is believed to have been taken against her will in the early morning hours of Feb. 1

The FBI has recovered more images from cameras at the Arizona home of Nancy Guthrie, the 84-year-old mother of Today co-host Savannah Guthrie who has been missing since Feb 1, sources close to the investigation told ABC News.

In recent weeks, the FBI was able to recover thumbnail images from motion-activated cameras pointed at the backyard, side yard and swimming pool on Nancy’s property, the sources told ABC News.

However, the cameras did not record anything suspicious and did not capture footage from the night of Nancy’s abduction, the sources told ABC News.

Savannah Guthrie/Instagram; Brandon Bell/Getty

On Friday, March 13, the Pima County Sheriff’s Department said that 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 said.

In an interview with NBC News on Thursday, March 12, Pima County Sheriff Chris Nanos warned that the suspect in Nancy’s disappearance could strike again.

He said investigators believe Nancy was “targeted,” but aren’t sure.

“It’d be silly to tell people, ‘Don’t worry about it. You’re not his target.’ You could be,” Nanos said, referring to her apparent kidnapper.

Nancy was taken from her Tucson, Ariz., home in the early morning hours of Sunday, Feb. 1, police said.

Her family called 911 at 12:03 p.m. on Feb. 1, after the mother of three failed to join friends to watch a virtual church service that morning.

The Pima County Sheriff’s Office, later joined by the FBI, launched a massive investigation into Nancy’s disappearance, saying they believed she was taken against her will.

Nancy Guthrie’s Tucson, Ariz., home.Joe Raedle/Getty

In one sobering announcement, Pima County Sheriff Chris Nanos revealed that blood spatter found on the front porch belonged to Nancy.

Even more chilling were Nest camera surveillance photos and video footage authorities released showing a masked, armed man on Nancy’s front porch in the early morning hours of Feb. 1.

Masked man seen on Nest camera footage at Nancy Guthrie’s house.Pima County Sheriff’s Department

The FBI Phoenix office shared additional details describing the suspect as “a male, approximately 5’9” – 5’10” tall, with an average build. In the video, he is wearing a black, 25-liter ‘Ozark Trail Hiker Pack’ backpack” that may have been purchased at Walmart.

Investigators disclosed that Guthrie’s doorbell camera was disconnected at 1:47 a.m., local time. Shortly after, at 2:12 a.m., the camera detected a dark figure walking toward the house. Sixteen minutes later, at 2:28 a.m., Guthrie’s pacemaker was disconnected from the pacemaker app on her cellphone, authorities said.

Law enforcement tracked down hundreds of leads, detaining several people for questioning and testing DNA found inside Nancy’s home, but finding no matches.

In an update on Friday, Feb. 27, the Pima County Sheriff’s Department stated, “This remains an active investigation and will continue until Nancy Guthrie is located or all leads have been exhausted.” It also claimed the department “is refocusing resources to detectives specifically assigned to this case. As leads are developed and resolved, resource allocation may fluctuate. PCSD will maintain a patrol presence in the Guthrie neighborhood.”

As the sheriff’s office and the FBI continue to investigate Nancy’s disappearance, Savannah and her siblings continue to hope for any answers about their mother.

Throughout the ordeal, they publicly advocated for their mother’s safe return through social media videos.

Savannah Guthrie with her siblings Annie and Camron ; Nancy Guthrie on May 4, 2015 in Sydney, Australia.Savannah Guthrie/Instagram ; Don Arnold/WireImage

On Tuesday, Feb. 24, Savannah announced that the family had increased the reward for any information leading to Nancy’s recovery or an arrest in the case to up to $1 million.

Savannah revealed that the family also donated $500,000 to the National Center for Missing and Exploited Children.