Sorry, I know we're getting off topic, but I sincerely doubt there is any Muslim connection at this time to this horrendous crime. (The perp will probably convert in prion once captured.) But to respond to the "No-Go Zone" comment.
Well yes, America, we do have "No-Go Zones"
Jamaat ul-Fuqra in the United States
Yes, it seems it wasn’t an Islamic crime, now that the details are coming out. But yesterday when I read that it was an especially brutal killing, I became suspicious, considering the infestation we have here.