Justin Mohn bought the gun the day before the murder, according to the Bucks County district attorney.
MIDDLETOWN TWP., Pa. — The man accused of showing his father’s severed head during a politically charged online rant this week first shot his father to death using a handgun he’d bought only a day earlier, the Bucks County, Pennsylvania, district attorney said Friday during a news conference.
Justin Mohn, 32, was arrested hours later Tuesday after breaking into a state National Guard facility about 100 miles away, armed with a 9 mm Sig Sauer handgun that was missing one round, prosecutor Jennifer Schorn said.
Mohn told authorities he’d gone to the military installation “in an effort to mobilize the PA National Guard to raise arms against the federal government,” Schorn said. His father, 68-year-old Michael Mohn, had worked for the US Army Corps of Engineers.
Justin Mohn also indicated he wanted to speak with Pennsylvania Gov. Josh Shapiro to “join forces,” Schorn said.
According to an autopsy report, Michael Mohn suffered a gunshot wound to the head and was subsequently beheaded using a knife and machete.
Justin Mohn bought the Sig Sauer 9mm handgun the day before the murder in Bristol Township, Pennsylvania, Schorn said.
Authorities say Mohn even gave up his medical marijuana card days before in order to make that purchase.
Schorn said Justin Mohn has “no history of diagnosed mental health issues.” She went on to say Mohn does not presently have any record of voluntary or involuntary commitment for inpatient psychiatric treatment.
“It was evident to us that he was of clear mind in his purpose and what he was doing, aside from what his beliefs are,” Schorn said.
She also noted that he is currently unemployed but previously lived in Colorado while working for a contractor for Microsoft. He was a graduate of Neshaminy High School and Penn State.
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Justin Mohn posted a video to YouTube. In it, Mohn holds up a decapitated head wrapped in plastic and claims it is father, Michael Mohn, a federal employee of more than 20 years.