Unfortunately it’s just a very poorly written headline. No wonder the papers are going broke...the man arrested wasn’t found dead, just the boy. Nothing in the story suggests the accused has died.
I say hand him over to tribal authorities and let them deal with it.
I remember a case a few yeas back near Traverse City where an indian had raped and murdered a child. He turned himself in to the state police because he didn’t want the tribe to get him.