A man accused of fatally beating a 33-year-old transient during a confrontation near downtown Riverside is slated to be arraigned Friday on a charge of first-degree murder.
Rayjai Watters, 23, of Riverside was arrested in December following a Riverside Police Department investigation into the slaying of Richard Castaneda.
Watters is due to appear before Riverside County Superior Court Judge Gary Polk at the Riverside Hall of Justice Friday morning…