The mysterious figure emerged in late 2022 in a Facebook group dedicated to the discussion of the Idaho student murders case — and vanished around the time of Kohberger’s arrest on Dec. 30 of that year, prompting speculation that the account could have been linked to the killer.

In the final weeks of 2022, the account emerged in a large Facebook group dedicated to seeking justice for the victims: University of Idaho students Madison Mogen, 21, Kaylee Goncalves, 21, Xana Kernodle, 20, and Ethan Chapin, 20.

Authorities have made no public comments or court filings linking Kohberger to the account. But with the gag order preventing most extrajudicial discussion of the case expected to end soon, authorities could finally address posts from the account — or the public could find out through unsealed search warrant returns, discovery disclosures, or digital forensics from Kohberger’s devices.

“At the very least, we might see warrant requests for social media accounts,” said Joshua Ritter, a former Los Angeles prosecutor and host of “Courtroom Confidential.” “Which would indicate they had the same suspicions.”

Rodger killed himself after the murder spree. Kohberger nearly got away with his. Authorities said they didn’t even have his name until more than a month after the murders, after the FBI used investigative genetic genealogy techniques to come up with a new lead based on the single-source DNA sample taken from the Ka-Bar sheath.

Bryan Kohberger arrives at Monroe County Courthouse in Pennsylvania in advance of highly anticipated extradition hearing. He’s charged with the murders of four University of Idaho students. (The Image Direct for Fox News Digital)

Eleven days later, they had Kohberger in handcuffs. 

The plea deal took the potential death penalty off the table. Kohberger is expected to receive four consecutive life prison sentences plus another 10 years at a formal sentencing hearing on July 23. As part of the deal, he waived his right to appeal or seek a sentence reduction.

A hearing on whether the court should lift the gag order before sentencing is scheduled for Thursday.

Fox News’ Stephanie Nolasco and The Associated Press contributed to this report.