RIVERSIDE (CNS) – A felon accused of fatally stabbing a 54-year-old man adjacent to railroad tracks near downtown Riverside is slated to be arraigned next week. Robert Thomas Campbell, 26, of Murrieta is charged with murder, a sentence-enhancing allegation of using a deadly weapon in the commission of a felony and parole violations in the slaying last month of Charles Edwin Jensen of Yucaipa.