BINGO!! I noticed that, too, but hadn't said anything here. It's just weird how we haven't heard much at all about this young man's background. You would think the media would be all over that. Or, maybe not, given the state of the American media today.
This may be the rare instance where reticence on the part of the press stems from kindness, rather than political correctness. Adopted children — as I noted in another post, my own child is adopted, so I am not anti-adoption — are overrepresented among troubled children and teens — so perhaps the media are hesitant to stress this angle, as what is also true is that the percentage of adopted children who actually harm other people is miniscule.