Ronald Gasser admitted to fatally shooting former NFL player Joe McKnight and now has been arrested and charged with manslaughter. Gasser reportedly told law enforcement officials that he shot and killed 28-year-old McKnight last week during a road-rage incident, in Terrytown, Louisiana over the weekend. Three shots were fired from the inside of his vehicle at McKnight, who was unarmed. Gasser, 54, was arrested Monday, after previously being released without charges. Officials will hold a press conference today to discuss his charges.