A southern California judge sentenced a man to six months in jail after he struck and killed a 12-year-old girl with a jet ski. Arsanyous Refat Ghaly, 20, entered a guilty plea to vehicular manslaughter with gross negligence Thursday over the death of the 12-year-old Savannah Peterson, which occurred last year. Peterson died while paddleboarding in Mission Bay in San Diego in July 2023 when Ghaly struck her with the jet ski he was driving, which was zooming across the water between 47-53 mph. The area of the accident was a strict 5 mph zone.