Bryan Kohberger, accused in the quadruple murder of University of Idaho students, faces a "monumental uphill battle" in his effort to withdraw his guilty plea, according to an attorney with extensive experience in criminal defense.
Mark Petrovich, who represented D.C. sniper Lee Boyd Malvo and has decades of experience, told Fox News Digital that defendants rarely succeed in withdrawing guilty pleas after sentencing, even when claims of unawareness of exculpatory evidence are involved. Kohberger pleaded guilty in July 2025 to the stabbing deaths of students Ethan Chapin, Xana Kernodle, Madison Mogen, and Kaylee Goncalves in November 2022. He accepted a plea agreement that spared him the death penalty, resulting in four consecutive life sentences without parole.
In recent court filings, Kohberger alleged he was pressured into accepting the plea agreement, did not fully understand potentially exculpatory evidence before pleading guilty, and was misled about his future incarceration conditions. He contends these factors compromised the voluntariness of his decision.
Petrovich cautioned against drawing direct comparisons between Malvo's post-conviction litigation and Kohberger's current attempt. Malvo's appeals were related to changes in constitutional law concerning juvenile sentencing, whereas Kohberger is trying to undo a plea agreement made as an adult after avoiding the death penalty.
"It's a monumental uphill battle," Petrovich stated. "First of all, getting the judge to allow you to withdraw the plea, and then second of all to winning any new proceeding, because there's a lot against you."
Petrovich highlighted that Kohberger would face two significant hurdles even if a judge permitted him to withdraw the plea. One is convincing a jury after having previously admitted guilt under oath. "One thing that's important is that you still can't hide from the jury the fact that you said under oath that you're guilty," Petrovich said. "Even if you withdraw, then you have to explain that... if you're going to get anywhere with any kind of jury finding."
Petrovich also raised questions about whether Kohberger's attorneys would have advised him to accept a plea agreement without first thoroughly reviewing the evidence disclosed during discovery. He noted that defense attorneys in capital cases typically spend years examining discovery before recommending a plea. "The attorneys on the case... were intimately familiar with the evidence and the information that was provided to them by law enforcement and prosecution," Petrovich said. "I'm sure they knew all about everything. If they encouraged him or if there was a discussion and a plea was decided on, I'm sure it was for good reason."
The attorney referenced historical cases where defendants sought to withdraw guilty pleas, including James Earl Ray, who pleaded guilty to assassinating Martin Luther King Jr. to avoid the death penalty but sought to withdraw his plea days later. Ray spent the remainder of his life trying to undo the plea without success. Serial killers Clifton Bloomfield and Robert Lee Yates Jr. also unsuccessfully attempted to withdraw guilty pleas after admitting to multiple murders.
Kohberger's plea agreement concluded years of pretrial litigation and spared him from a capital trial. Petrovich suggested that this history, combined with the extensive discovery and plea negotiations preceding Kohberger's agreement, makes the current effort to withdraw it particularly difficult.