The Blade reports prosecutors filed the charges Tuesday in Toledo against the boys, ages 13 to 15. The teens initially were charged with the juvenile equivalent of felonious assault.
Twenty-two-year-old Marquise Byrd died Friday at a hospital. The Warren, Michigan, man was sitting in the front passenger seat of a car traveling south on Interstate 75 in Toledo when a sandbag smashed through the windshield Dec. 19.
The Lucas County Coroner's Office says Byrd died of blunt-force trauma injuries to the head and neck.
Police and a prosecutor have said the teens threw other objects from the overpass that night.
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