The man who is accused of killing former NFL player Joe McKnight was indicted on Thursday by Jefferson Parish’s District Attorney on second-degree murder charges following a grand jury’s investigation.

The man accused of killing McKnight, Ronald Gasser Jr., was arrested for manslaughter in December for the death of McKnight on Dec. 1 in a road-rage incident.

Detectives believe both men were driving erratically as they approached a bridge. One witness reportedly said McKnight may have cut off Gasser, which upset the man. Gasser fired three rounds from his gun through a passenger window and killed McKnight.