MIAMI (MCT) — Rudy Eugene, the man who chewed off a homeless man’s face on the MacArthur Causeway and was shot to death by Miami police, had no drugs in his system other than marijuana, the Miami-Dade Medical Examiner’s office said Wednesday.

On May 26, Eugene stripped off his clothes along the causeway from Miami Beach before attacking 65-year-old Ronald Poppo in a ghoulish, drawn-out assault in plain view on a city sidewalk captured by a Miami Herald security camera. Eugene was shot by a police officer who found him chewing chunks off Poppo’s face.