Investigators on Friday released the complete text of two alleged ransom notes tied to the disappearance of Nancy Guthrie, marking six months since the 84-year-old grandmother vanished from her Tucson home as authorities renew their appeal for information that could finally crack the high-profile case.

According to the Pima County Sheriff’s Office, the emails were sent to the newsroom of Tucson television station KOLD-13 on Feb. 2 and Feb. 6 by someone claiming to be holding Guthrie captive. Along with releasing images of the messages, investigators said they hope the writing style may help identify the person responsible.

The first email, sent just one day after Nancy was reported missing, was addressed directly to her daughter, “Today” show anchor Savannah Guthrie.

“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,” the message began.

The note demanded millions of dollars in Bitcoin and set strict payment deadlines, threatening increasingly severe consequences if the money was not delivered.

“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 recieved [sic] by the last deadline on Monday the 9th at 5PM, she will be killed,” the note warned.

The message continued by insisting there would be no further communication or negotiations and warned the family against involving law enforcement.

“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,” the note continues, followed by a redacted line.

The email concluded with a chilling reference to details from inside Guthrie’s property.

“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 chilling message concludes.

A second email, sent four days later, claimed that Guthrie had died while in captivity.

“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 all can find peace. We are truly sorry,” it read.

Authorities redacted the sender’s name, email address, and date of birth from both messages before releasing them publicly.

The sheriff’s office said investigators believe the wording of the emails may prove just as valuable as physical evidence.

The notes reveal “distinctive patterns of word choice, syntax, and phraseology that reflect the writer’s unique linguistic style.

“They also provide valuable insight into the person’s mindset, motives, and the evolution of their tone over time,” the office’s X post reads.

Investigators said those linguistic traits may be familiar to someone who knows the writer, just as they hope someone will recognize the unidentified man captured in surveillance footage outside Guthrie’s home.

“As with the unidentified male depicted in the video, we believe these distinctive linguistic characteristics may be recognizable to someone who knows or has interacted with the notes’ writer,” reads the post, which also implores anyone who may recognize the masked man seen in haunting surveillance camera footage taken from Nancy’s home to contact authorities.

“A friend, family member, coworker, classmate, or acquaintance may recognize these patterns of expression and possess information that could help identify the individual responsible,” it continues.

Authorities also disclosed that surveillance footage showing a man dressed entirely in black outside Guthrie’s home may have been recorded on two different days. Detectives believe the videos are essential to understanding the suspect’s actions before the disappearance.

“They indicate he took steps to prepare for the event on the night of January 31 to February 1.”

The sheriff’s office is also urging the public to think back to any unusual behavior displayed by acquaintances around the time Guthrie disappeared. Investigators say warning signs could include sudden nervousness or irritability, unexplained injuries, changes in appearance, abrupt travel, unusual vehicle cleaning or repairs, or an unexpected fascination—or complete lack of interest—in the widely publicized case.

Friday’s appeal came exactly six months after Nancy Guthrie was last seen by her daughter and son-in-law on the evening of Jan. 31.

“Investigators continue to pursue every available technological and investigative lead,” the sheriff’s office insisted Friday.

“However, community members remain a vital resource as we seek to provide answers for Nancy’s family.”

The FBI continues to offer a $1 million reward for information leading to Nancy Guthrie’s recovery, and anyone with information is urged to contact the FBI or local authorities.

Earlier this week, Savannah Guthrie issued another emotional plea, this time speaking directly to those she believes are holding her mother.

“The world can be a cruel and unforgiving place, and I know that you have tried to do things the right way,” she said Monday, appearing to address the kidnappers directly.

“So I am asking you, begging you, to do the right thing now,” she added.