I have written several times in the past about the case of Robert Middleton, who was set on fire by a neighbor boy when he was eight years old and died of cancer (possibly related to skin grafts) when he was 20.
Latest update: a judge has ruled that Donald Collins, who set Middleton on fire (and who was 13 at the time) can be tried as an adult for murdering Middleton.
It is worth pointing out here that Collins has not actually been charged yet, as Lambright notes. The DA has some hurdles to overcome, since Middleton is dead, and there were no other witnesses to the attack. And if Collins is convicted, his attorney can appeal both the conviction and the ruling allowing Collins to be tried as an adult.