LEVITTOWN, Pa. (AP) — A man in suburban Philadelphia has been charged with first-degree murder and abusing a corpse after his father was found decapitated. Police are investigating a video on social media that allegedly shows him holding up the head. The father was found decapitated in the bathroom of his home in Levittown, Pennsylvania, on Tuesday night. Police have identified the son as 32-year-old Justin Mohn. He was arrested about 100 miles away in Fort Indiantown Gap. Mohn was arraigned early Wednesday and held without bail. No attorney for Mohn is listed in court records. A message seeking comment on his behalf was left at a phone listing for him.