Mr. Mohn was arrested in Fort Indiantown Gap, more than 110 miles from the scene of the crime, said Chief Joseph Bartorilla of the Middletown Township Police Department. He was being held without bail, according to Lieutenant Forman.
The police said that Mr. Mohn’s mother, had called them around 7 p.m. on Tuesday and reported finding her husband dead. The police said the man was found in the bathroom of the home, in Levittown, about 20 miles northeast of Philadelphia.
On Wednesday morning, YouTube confirmed it had taken down the video because it violated the company’s graphic violence policy. It also terminated Mr. Mohn’s channel for violating its violent extremism policies.
YouTube said it was monitoring for any re-uploads of the video to prevent it from resurfacing.
YouTube videos are reviewed by a combination of humans and machines, according to the company. It’s unclear, however, how such a graphic video could stay online for five hours before being taken down, and a YouTube spokeswoman did not answer questions about why it took that long for the video to be removed.
Between July and September of last year, YouTube took down more than 10.5 million channels and more than 8.1 million videos, according to the company. More than 95 percent of the removed videos were first flagged by automated systems, according to YouTube.