Police said Michael Mohn’s wife, Denice Mohn, arrived home and found the body about 7pm on Tuesday. Officers found Mohn’s body, a machete and bloody rubber gloves, according to a police affidavit. Denice Mohn told police her husband’s white Toyota Corolla and her son were missing.
Police said the YouTube video, which was more than 14 minutes long, showed Justin Mohn picking up his father’s decapitated head and identifying him by name. Police said it appeared Mohn was reading from a script as he railed about the government.
In a statement, YouTube said the video, which was uploaded and not live-streamed, was removed for violating its graphic violence policy and Mohn’s channel was shut down.
Mohn embraced violent anti-government rhetoric in writings he published online going back several years. In August 2020, Mohn published an online “pamphlet” in which he tried to make the case that people born in or after 1991 – his birth year – should carry out what he termed a “bloody revolution”.
He also complained at length about a lawsuit that he lost, and encouraged assassinations of family members and public officials.
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In the video posted after the killing, he described his father as a 20-year federal employee and called him a traitor to his country. He also espoused a variety of conspiracy theories and rants about the Biden administration, immigration and the border, fiscal policy, urban crime and the war in Ukraine.
Mohn then drove his father’s car to Fort Indiantown Gap, where he was taken into custody, Captain Pete Feeney of the Middletown Township Police Department said.
Officials at Fort Indiantown Gap were told late Tuesday that Mohn’s cellphone had pinged nearby, according to Angela Watson, communications director for the Pennsylvania Department of Military and Veterans Affairs.
Investigators caught up with Mohn inside the National Guard base, where he was walking after having apparently jumped the fence. He had a gun when he was caught, Watson said. She said he has never been a member of the Pennsylvania National Guard.
I opened the video and I was like, ‘Oh my God, that’s they guy I see every day, and I knew something was unhinged with him.’
The house where the body was found is in a suburban development of single-family homes. No one answered the door there early on Wednesday.
Neighbours out walking dogs Wednesday morning described Justin Mohn as a regular walker in the development, someone they recognised and described as weird.
Bart DeHaven said he called police a handful of times since the summer after Justin Mohn sat on a raised manhole cover in a park directly across the street from his home and stared at his house.
“It’s just sad,” DeHaven said. “He should have got some kind of help.”
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Carrie McCarthy said she saw him walking frequently and sitting in the wooded area in the neighbourhood. She said someone sent her the YouTube video, which left her stunned.
“I screamed. I totally screamed,” she said. “I opened the video and I was like, ‘Oh my God, that’s they guy I see every day, and I knew something was unhinged with him.’”
A man who lived in apartments with Mohn about a decade ago in Colorado Springs, Colorado, recalled hearing Mohn talk at length about conspiracy theories. Davis Rebhan said he left the living situation shortly after Mohn became volatile one night and damaged the walls and other objects.
Mohn’s only visitor during the year they lived together was his father, who visited for a weekend, Rebhan said.
“I got nothing from that visit that would have made me ever think this would happen,” Rebhan said.
“There was nothing that would lead me to believe that Justin didn’t care about his dad. And it was really clear that his dad cared about him because it was clear he had these issues and his dad still came across the country to stay with him.”
Mohn, who also was arrested on a weapons possession charge, was arraigned early on Wednesday and held without bail. He is scheduled for a hearing on February 8. A spokesperson for the Bucks County district attorney’s office said they did not expect to comment publicly about the case on Wednesday.
A lawyer for Mohn was not listed in court records on Wednesday morning and a message seeking comment on his behalf was left at a phone listing for him. The district court office said it had no record of a lawyer representing him.