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A crazed conspiracy theorist who admitted he shot and beheaded his father at their Pennsylvania home and then posted footage of the severed head on YouTube was convicted and sentenced to life in prison Friday.

Justin D. Mohn, 33, was found guilty Friday morning by Bucks County Judge Stephen A. Corr for the January 30, 2024, shooting of Michael Mohn, 68, at their Levittown, Pennsylvania, home.

Corr also sentenced the killer-son to life in prison without the possibility of parole.


  This photo provided by the Bucks County, Pa., District Attorney’s Office shows Justin Mohn, the man accused of beheading his father in their suburban Philadelphia home in January 2024. AP This photo provided by the Bucks County, Pa., District Attorney’s Office shows Justin Mohn, the man accused of beheading his father in their suburban Philadelphia home in January 2024. AP

  Mohn, 33, was found guilty Friday morning for the shooting of Michael Mohn, 68, at their Levittown, Pennsylvania, home. Facebook / Denice Kaplan Mohn Mohn, 33, was found guilty Friday morning for the shooting of Michael Mohn, 68, at their Levittown, Pennsylvania, home. Facebook / Denice Kaplan Mohn

The son coldly admitted to the judge Thursday — as his mother, Denice Mohn, wept — how he executed his father and then brazenly posted a 14-minute video displaying his head for the likes and to send a message to federal workers that they should meet his demand for them to resign.

“I knew something such as a severed head would not only go viral but could lessen the violence,” Mohn told the judge. 

Mohn also explained his twisted logic that he was planning a “citizen’s arrest” of his left-leaning father, on the grounds he committed treason by trying to foil the son’s attempts at becoming a political leader like President Trump.

But the dad “resisted arrest” and Mohn had to move to “plan B,” he testified, claiming the murder was ultimately in self-defense since his dad allegedly grabbed a gun and tried to shoot the son first.

“I unfortunately had to use deadly force,” he told the judge. “I would object to calling it murder.”


  Mohn explained his twisted logic that he was planning a “citizen’s arrest” of his left-leaning father, due to foiling the son’s attempts at becoming a political leader like President Trump. U.S. Army Corps of Engineers Philadelphia Mohn explained his twisted logic that he was planning a “citizen’s arrest” of his left-leaning father, due to foiling the son’s attempts at becoming a political leader like President Trump. U.S. Army Corps of Engineers Philadelphia

Mohn’s disturbing video was live on YouTube for several hours before it was removed. He was arrested the same day as he was trying to incite people to help him overthrow the government.

Bucks County District Attorney Jennifer Schorn told reporters Friday that Mohn showed a “complete and utter lack of remorse” over the “unimaginable, unfathomable crime.”

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Prosecutors claimed at trial that Mohn had recently bought the pistol he used to kill his dad – a respected civil engineer in the Army Corps of Engineers’ – and then he decapitated him with a kitchen knife and a machete.

When Mohn was arrested, cops found a USB device on him that had photos of federal buildings and bomb-making instructions.


  Prosecutors claimed at trial that Mohn had recently bought the pistol he used to kill his dad – a respected civil engineer in the Army Corps of Engineers’ – and then he decapitated him. Courtesy Mohn family Prosecutors claimed at trial that Mohn had recently bought the pistol he used to kill his dad – a respected civil engineer in the Army Corps of Engineers’ – and then he decapitated him. Courtesy Mohn family

  The Mohn residence. LP Media The Mohn residence. LP Media


  Flowers rest at the front door of the Mohn residence in Upper Orchard section of Levittown, Pa., on Feb. 2, 2024. AP Flowers rest at the front door of the Mohn residence in Upper Orchard section of Levittown, Pa., on Feb. 2, 2024. AP

His defense attorney Steven Jones had claimed the materials were for research since Mohn was a fiction writer.

Mohn’s parents were financially supporting him as he’d been looking for a job, his mother testified. 

With Post wires

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