Pima County deputies say Nancy Guthrie investigation is far from over

PIMA COUNTY, Ariz. (NBC, KYMA) - Just days before the investigation into the disappearance of Nancy Guthrie hit the six-month mark, Pima County deputies said the investigation is far from over.

"A cold case is exactly that...I have no idea...There's nothing I can look at...I'm waiting for somebody to call me...I'm waiting for something...That's the not the case," said Pima County Sheriff Chris Nanos, "We're still working to case."

DNA and digital evidence analysis remains the focus of the investigation. That's been the key part of this for months.

"We have so much DNA to sort through...so much in terms of video evidence to look at," Sheriff Nanos shared.

The message goes on to say that evidence and analysis is "complex and time-sensitive."

While the sheriff said many people have a hard time understanding the complexity of the case, he said the answer to solving it could still be one call or one tip away.

"It's just really hard for, I think, the community or the public to understand how these cases work or how they evolve," Nanos expressed. "Someone knows something...we think it's something here in Tucson."

In a post to X Friday, the Pima County Sheriff's Office posted screenshots of redacted versions of the two ransom notes sent to a CBS station in Tucson.

The first note reads:

"Hello Savannah,

We have your mother Nancy. She is safe but scared. She will be held for ransom and once payment is received she will be released unharmed. We will be holding her for a maximum of 7 days. You will need to send bitcoin in the amount of $4 million USD before 5PM on Thursday the 5th. If payment is not received, the ransom will be increased to 6 million USD which will need to be paid by 5PM on Monday the 9th. Once payment is received to the bitcoin address below she will be released within 12 hours of deposit to a safe drop off location back in Tucson. If payment is not received by the last deadline on Monday the 9th at 5PM, she will be killed. Your mother is aware of this and her life is in your hands. It is in the best interest of everyone to have this completed as soon as possible. You will not be able to contact me from here on out, there will be no negotiation. Do not play games, law enforcement will not be able to help you.

She had a white smart watch on the floor of the foot of her bed and the white flood light in backyard was destroyed."

The second note reads:

"Guthrie Family,

We did not fully grasp the seriousness of her physical condition. We never intended to hurt her, that was not our intention. She perished shortly after she was taken. We believe it was heart related. She is buried in nature now. Nothing you could have done could have changed the outcome. We want your family to know this and hope you call can find peace. We are truly sorry."

Friday marks 181 days since Guthrie's disappearance.