He’s Accused of Beheading His Dad, Then Posting Grisly Footage to YouTube. Now He’s Facing a Murder Trial

The trial for a Pennsylvania man accused of decapitating his father and displaying the severed head in a video posted on YouTube began Monday, July 7.

Justin Mohn, 33, is facing charges of first-degree murder, abuse of a corpse, possession of an instrument of crime and terrorism related charges in connection with the 2024 death of 68-year-old Michael F. Mohn.

According to a probable cause affidavit viewed by PEOPLE, officers found the decapitated remains of Michael in the downstairs bathroom of the family’s Levittown home on Jan. 30, 2024.

Officers found a machete in the bathtub and a large kitchen knife. Michael’s head was found in a plastic bag inside a cooking pot in a first-floor bedroom near the bathroom, per the affidavit.

Investigators also discovered a video entitled “Mohn’s Militia-Call to Arms for American Patriots” posted to Mohn’s page on YouTube.

The 14-minute video allegedly showed Mohn picking up “the decapitated head of his father Michael Mohn, identifying him by name and as his father, stating ‘He is now in hell for eternity,’” according to the affidavit.  

The video also allegedly “ordered all militia and patriots across the United States to kill all federal employees,” the Bucks County District Attorney’s Office said in a press release.

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He also allegedly listed several targets for capture and public execution including specific federal officials and a U.S. District Court Judge.

Mohn’s father worked with the Army Corps of Engineers, prosecutors said.

An autopsy determined that Michael was shot in the head before he was decapitated, prosecutors said.

After the suspected killing, Mohn, who was armed with a handgun, fled the scene in his father’s 2009 Toyota Corolla, authorities said. He was eventually captured after investigators tracked him via his cellphone to the National Guard Training Center in Fort Indiantown Gap. Prosecutors alleged that Mohn was there to try and convince the National Guard to rally against the federal government.

Investigators also found a USB device that “contained several pictures of federal buildings along with instructions that appeared to show the steps needed to make an explosive device,” per the prosecutors.