Staff Reporter
In a spine-chilling case unfolding in Pennsylvania, a man stands accused of killing his own father, filming the brutal act, and sharing it online with chilling political messages. Justin D. Mohn, 33, now faces trial for murder, abuse of a corpse, and terrorism-linked charges after allegedly beheading his father, Michael F. Mohn, at their Levittown home. The shocking video remained live for hours, filled with anti-government rants. As the courtroom prepares for this grim drama, the nation watches a disturbing tale of blood, betrayal, and digital outrage take center stage.
STORY HIGHLIGHTS
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Defendant: Justin D. Mohn, 33, charged with murder, corpse abuse, and terrorism-related offenses
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Victim: Michael F. Mohn, 68, longtime federal employee and U.S. Army Corps of Engineers engineer
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Crime Scene: Levittown home shared by defendant and his parents
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Alleged Acts: Shot father, decapitated him with knife and machete, posted 14-minute video to YouTube
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Arrest Location: Fort Indiantown Gap, after climbing fence armed with handgun
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Prosecutor’s Statement: Mohn sought to “mobilize the National Guard to raise arms against the federal government”
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Digital Evidence: USB drive with federal building photos, explosive-making instructions
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Online Content: Anti-government writings, video rants about immigration, war in Ukraine, fiscal policy
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Mental Health Note: Letter to Russian ambassador requesting asylum, apologizing to Putin
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Legal Status: Trial to begin Monday, no plea deal expected
A deeply disturbing case involving patricide, online extremism, and alleged anti-government plotting is set to unfold in a Pennsylvania courtroom. On Monday, Justin D. Mohn, 33, will face trial in the Philadelphia suburbs for the brutal killing of his father, 68-year-old Michael F. Mohn. Prosecutors allege the case goes far beyond domestic violence, painting a chilling picture of political extremism and an attempt to incite armed rebellion.
The incident occurred in the family’s Levittown home, where Mohn lived with both his parents. On the day of the alleged crime, Justin Mohn is said to have used a newly acquired pistol to shoot his father, followed by an act of grisly violence—decapitating him with a kitchen knife and a machete. Authorities say the crime was not only committed, but also documented and broadcast. A 14-minute video, which included graphic footage and political rants, was uploaded to YouTube and remained publicly accessible for several hours before it was removed.
Michael Mohn’s wife, the defendant’s mother, discovered the body in a bathroom. She reportedly contacted the authorities immediately after the discovery. By then, Justin Mohn had already fled the scene.
Later that day, he was located and arrested at Fort Indiantown Gap—the Pennsylvania National Guard’s headquarters—after allegedly climbing a 20-foot-high fence while armed with a handgun. Prosecutors say Mohn’s presence there was no coincidence. According to Bucks County District Attorney Jennifer Schorn, Mohn “had hoped to mobilize the Pennsylvania National Guard to raise arms against the federal government.”
When taken into custody, Mohn was reportedly found in possession of a USB device containing photos of various federal buildings, along with what authorities described as instructions for building explosive devices. Investigators said he had also published multiple online writings that expressed violent, anti-government rhetoric.
The YouTube video reportedly included angry monologues that touched on a range of issues including government policy, immigration and border control, urban crime, federal spending, and the war in Ukraine. In the video, Mohn referred to his father—who had spent over two decades as an engineer with the geoenvironmental division of the U.S. Army Corps of Engineers—as a “traitor” due to his long-standing federal employment.
“He was a 20-year federal employee,” Mohn stated in the video, according to prosecutors. “A traitor to the people.”
Defense attorney Steven M. Jones said last week that a plea deal is unlikely, adding that the case will likely proceed to a full trial. “We are preparing for trial. I don’t anticipate a resolution outside of that process,” Jones remarked, signaling the defense’s intent to challenge the charges in court.
The case had earlier prompted questions about Mohn’s mental state. During a competency hearing last year, a defense expert testified that Mohn had written a letter to the Russian ambassador in the United States. In the letter, Mohn allegedly sought protection and asylum in Russia and apologized to President Vladimir Putin for falsely claiming he was the czar of Russia.
Authorities believe the contents of the letter, along with the graphic video and digital evidence recovered at the time of arrest, reveal a man immersed in dangerous fantasies and extremist ideologies—ones that eventually turned deadly.
Michael Mohn, remembered by colleagues and neighbors as a quiet professional, had spent a career working on environmental projects for the federal government. His violent death, prosecutors argue, was not just an act of personal hatred but a statement against the very system he served.
As the trial begins, the case is expected to bring together elements of domestic violence, online radicalization, and political extremism—all under the roof of a suburban Pennsylvania home.
As the trial of Justin D. Mohn begins, the courtroom becomes a stage for one of Pennsylvania’s most unsettling criminal cases in recent memory. With disturbing digital evidence, claims of anti-government intentions, and a horrific family tragedy at its core, the proceedings are set to unravel layers of motive, mental state, and ideology. While justice now takes its course, the case serves as a haunting reminder of how extremism, when left unchecked, can erupt into unthinkable violence—both online and at home.
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