It was just a tragic suicide by a troubled young man. The fact that he had a Pakistani room mate, had tried to buy large quantities of ammonium nitrate, was wearing a backpack packed with TATP and shrapnel (ala London bombers) after being refused entry to a stadium with 85,000 people inside is pure coincidence. Anyone who read anything else into this other than a simple, everyday suicide is un-American and ought to be ashamed of themselves.
Are you serious or did you forget sarcasm?