I wonder if that box of stolen cigars was in or around the police car as further evidence against the two perps.
People just don't wait for investigations to be completed. They do have a system, and in this case need to be especially thorough. They'll be releasing the cops photos of his lacerations...and likely the second autopsy of the kid. Plus there's other forensic information to come I'm sure.
However...it doesn't look good for the kid at this point....pretty evident he was roughing the guy up and that took the kid over the threash-hold of simply shop lifting cigars....and he took himself downhill further thereafter.