LATEST UPDATE: Savannah Guthrie’s brother has just revealed a THREE-WORD CRUCIAL MESSAGE from their mother on the day the tragedy occurred — the suspect’s identity has finally been uncovered, as an extremely important clue in the case comes to light.

Savannah Guthrie‘s brother, Camron Guthrie, has a direct message for those suspected of abducting their mother, Nancy Guthrie.

In a new video posted on Savannah’s Instagram page on Thursday, Camron, a retired F-16 fighter pilot, pleads for those responsible “to reach out.” Investigators have said Nancy was likely taken against her will in a “possible kidnapping or abduction.”

“This is Camron Guthrie. I’m speaking for the Guthrie family,” he said in the new video. “Whoever is out there holding our mother, we want to hear from you. 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. But first, we have to know that you have our mom. We want to talk to you and we are waiting for contact.”

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Camron’s new comments came a day after he, Savannah and their sister, Annie Guthrie, shared an emotional video on social media, where they addressed media reports about an alleged ransom letter.

“Our mom is our heart and our home. She’s 84 years old. Her health, her heart, is fragile. She lives in constant pain. She is without any medicine. She needs it to survive, and she needs it not to suffer,” the Today show co-host said on Wednesday. “We, too, have heard the reports about a ransom letter in the media. As a family, we are doing everything that we can. We are ready to talk. However, we live in a world where voices and images are easily manipulated. 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.”

A ransom letter hasn’t been directly confirmed by authorities, but the Pima County Sheriff’s Department acknowledged the reporting of a ransom note, obtained by TMZ and at least two local news outlets in Arizona on Tuesday, saying that investigators are “following all leads.”

Nancy, who takes essential medications and has mobility issues, was last seen by Annie’s husband, Tommaso Cioni, when he dropped her off at her home in Tucson, Arizona, on Saturday night. The following day, she was reported missing by family members after she didn’t show up for church service.

The Pima County Sheriff’s Department is investigating her disappearance, calling it a “possible kidnapping or abduction.” Nancy’s home was also being treated as a crime scene, as blood discovered on the porch of her home tested positive as her own, authorities confirmed.

Earlier on Wednesday, Sheriff Chris Nanos shot down reports that Cioni had been identified as a possible suspect, scolding members of the media who reported him as a person of interest without confirming it with investigators. He said in a statement shared on the sheriff’s department’s Facebook page, “At this point, investigators have not identified a suspect or person of interest in this case.”

Nanos also said in an interview with NBC News’ Liz Kreutz on Wednesday that he remains hopeful that Nancy is still alive. “We have nothing else to go on but the belief that she is here,” he shared. “She’s present. She’s alive, and we want to save her.”

In an update on Thursday, the FBI announced a $50,000 reward for information that leads to Nancy’s discovery.

”We believe Nancy is still out there,” Nanon added. “We want her home. The sheriff’s department, along with all of our partners at the FBI, has been working around the clock, and we just want her home and to find a way to get to the bottom of all of this.”