BUCK COUNTY, Penn. (WKRC) — A mother cried in court as her son described how he beheaded his father on camera because he knew it would "go viral."

Justin Mohn, 33, said he executed and beheaded his father, Michael Mohn, 68, on camera because his dad wanted to stop him from becoming the next Donald Trump, New York Post reported.

Justin then posted the video footage on YouTube.

“I unfortunately had to use deadly force,” said Justin in Bucks County, Pennsylvania court, NYP reported.

Justin told the court that his father threatened him and tried to take away his 9mm handgun, so it was his "Plan B" to shoot his father in the head while attempting a "citizen's arrest."

Michael was a civil engineer with the Army Corps of Engineers.