Savannah Guthrie says her family is "at an hour of desperation"

In a new Instagram video, Savannah, 54, said: "We believe our mom is still out there. 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.

"So 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 Tuscon.

"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. We are at an hour of desperation, and we need your help."

Nancy, 84, went missing on January 31, and by February 2 the Pima County Sheriff's office had dec lared her disappearance a crime after "concerning" evidence was found at her home in Arizona.

On Thursday (05.02.26), the FBI offered a $50,000 reward for information leading to her being found, "and/or the arrested and conviction of anyone involved in her disappearance".

Over the weekend, Savannah appeared in another video with her siblings Cameron and Annie as she revealed they are willing to "pay" for their mother's safe return.

She said: "We received your message, and we understand.

"We beg you now to return our mother to us so that we can celebrate with her. This is the only way we will have peace. This is very valuable to us, and we will pay."

The video did not give details about the message Savannah referenced.

Authorities previously confirmed they are investigating a ransom note demanding bitcoin, which was shared with the media.

A separate fake ransom note has led to an arrest, and FBI Agent Heith Janek insisted it came from "someone that was trying to profit from [Nancy's case], a total imposter".

He added: "My next message is to those imposters who are trying to take advantage and profit from this situation.

"We will investigate and ensure you are held accountable for your actions."