Pennsylvania man who described the murder as “Plan B” after an alleged betrayal by his federal-employee father now faces life without parole.

Verdict Reached in Harrowing Case

July 11, 2025: Bucks County Judge Stephen A. Corr has convicted Justin D. Mohn, 33, on charges including first-degree murder, terrorism, and abuse of a corpse. The sentence: two consecutive life terms without the possibility of parole after the judge presided over a bench trial concluding Friday.

A Chilling Defense: “Plan B” Citizen’s Arrest

Mohn took the stand, claiming he intended to conduct a citizen’s arrest on his father, Michael F. Mohn, for alleged treason and false statements. When resistance occurred, Mohn said the arrest turned into violence—first he shot his father, then decapitated him to send a message to federal employees.

Gruesome Video Meant to Intimidate

Following the murder, Mohn uploaded a 14-minute video to YouTube—showing his father’s severed head and issuing a call to action against federal workers, including judges. The video was online for several hours before removal.

“He Does Not Feel Guilt”

During his sentencing, prosecutors highlighted Mohn’s lack of remorse and emotional detachment. They said his decision to publicize the video and use the murder for political intimidation emphasized his chilling disregard for human life.

Evidence of Extremist Planning

Authorities found evidence Mohn had planned his actions: notebook entries labeled “Boom” and “Slice” as fallback options, emails to political figures—including Russia’s ambassador—and a USB drive containing photos of federal buildings and bomb-making instructions. His mother testified that law enforcement had previously warned the family about his radical rhetoric.

Why This Case Resonates

Extremist violence meets personal betrayal: A son targeting his own father—a longtime federal employee—for ideological reasons captured national attention.

First terrorism conviction of its kind in Pennsylvania: The prosecution successfully argued his actions were politically motivated.

Warning signs ignored: Neighbors and law enforcement had flagged his behavior—yet no intervention occurred before tragedy struck.

Justin Mohn’s conviction closes one of the most disturbing cases in recent memory: a self-proclaimed citizen’s arrest that escalated into murder and political terror. With a life sentence ahead and total lack of remorse documented, the case underscores how conspiracy-fueled extremism can destroy families—and threaten democracy.