JUST IN: Police have just released a LIST of surveillance images of several suspects in the Nancy Guthrie case

Nancy Guthrie, Savannah Guthrie.Credit : Nathan Congleton/NBCU Photo Bank/NBCUniversal via Getty; DZ/Star Max/GC Images

There is a new update in the investigation into the disappearance of Savannah Guthrie’s mother, Nancy Guthrie.

On Tuesday, Feb. 10, NBC News correspondent Tom Winter revealed in a post on X that law enforcement is “expected to release a surveillance photo showing a potential subject in the ongoing investigation into the taking of Nancy Guthrie as soon as this afternoon, according to two senior law enforcement officials.”

Nancy, 84, was reported missing on Sunday, Feb. 1. She was last seen on the evening of Jan. 31 when she was dropped off at her Arizona home after having dinner with her daughter Annie Guthrie and her son-in-law.

Authorities believe she was taken against her will, and Pima County Sheriff Chris Nanos previously confirmed that blood found on the exterior porch of Nancy’s home matches her DNA.

Savannah, 54, Annie and their brother Camron Guthrie have made several pleas for the return of their mother, who police believe was abducted. On Monday, Feb. 9, the Today anchor posted a video to her Instagram to share “a few thoughts as we enter into another week of this nightmare.”

“I just want to say first of all, thank you so much for all of the prayers and the love that we have felt — my sister, my brother and I. And that our mom has felt,” she said. “Because we believe that somehow, someway, she is feeling these prayers and that God is lifting her in this moment and in this darkest place.”

“We believe our mom is still out there,” Savannah continued. “We need your help. Law enforcement is working tirelessly around the clock, trying to bring her home, trying to find her. She was taken and we don’t know where. And we need your help.”

She concluded her message by asking people to report anything they might know to authorities.

“I’m coming on just to ask you, not just for your prayers but no matter where you are — even if you’re far from Tucson — if you see anything, if you hear anything, if there’s anything at all that seems strange to you that you report to law enforcement,” she said. “We are at an hour of desperation, and we need your help.”

At the time of her posting, police had not yet identified any suspects in the case as they continued to investigate an alleged ransom note sent to the media. The letter, sent to Arizona television stations KOLD and KGUN, specified two separate sums: $4 million in bitcoin due Thursday, Feb. 5, and if that was not met, an increased demand of $6 million by Monday, Feb. 9, PEOPLE previously reported.

On Friday, Feb. 6, the FBI acknowledged a new message potentially tied to Nancy’s kidnapping. “Investigators are actively inspecting the information provided in the message for its authenticity,” the statement read.

That same day, PEOPLE confirmed that Nancy’s blue SUV was taken from her garage. Footage captured by NBC News showed the vehicle being placed on the back of a tow truck and driven away from the residence.

Earlier that week, Savannah, Annie and Camron shared a video on social media on speaking to Nancy’s potential abductor: “We need to know without a doubt that she is alive and that you have her. We want to hear from you and we are ready to listen. Please, reach out to us,” Savannah said in the clip.

Cameron also spoke out in a clip posted on Savannah’s social media on Feb. 5, calling for “whoever is out there holding our mother” to get in touch with the family. “We haven’t heard anything directly. We need you to reach out, and we need a way to communicate with you so we can move forward,” Camron said. “But first, we have to know that you have our mom. We want to talk to you, and we are waiting for contact.”

The FBI is urging anyone with tips or leads to call 1-800-CALL-FBI in addition to the Pima County Sheriff’s Office number, 520-351-4900.