The 19-year-old who previously pleaded guilty in the 2022 death of a 15-year-old Oliver Citywide Academy student learned his sentence Thursday. Eugene Watson was sentenced to 20 to 40 years in prison for killing 15-year-old Marquis Campbell. Fifteen to 30 years for third-degree murder, 3 to 6 years for conspiracy and 2 to 4 years on firearms charges.