Back in 1971, in the "Vermont" area of s/w L.A. (near where Reginald Denny got his head caved in at the beginning of the Rodney King Riots), we were hunting for a 10year old who'd stabbed his best friend to death for a record album. There are some in our nation that have unique values instilled in them.
Very sad. In the case of a 10-year-old, I'd argue for indicting the parent(s) or guardian(s) for custodial negligence resulting in the death of another (if such a charge were possible).