Overview

• Judge Stephen A. Corr convicted Mohn of first-degree murder for the January 2024 killing of his father, Michael F. Mohn, and set a later sentencing hearing.
• Testimony and evidence showed Mohn planned the violence in a notebook labeling decapitation tactics as “Plan B” after a failed citizen’s arrest for alleged treason.
• Prosecutors played portions of the 14-minute YouTube video in which Mohn displayed his father’s severed head and issued calls for insurrection.
• Mohn was arrested the same day at Fort Indiantown Gap after posting the video, and authorities recovered a USB drive with photos of federal buildings and bomb-making instructions.
• The case underscores challenges in addressing homegrown extremism, online radicalization and moderation of graphic content on social media.