Say investigators.... Egyptian investigators. The same ones who denied 990 was a suicide, that MetroJet had no evidence of an inflight break up, and that Flash Airlines 737 crash was inconclusive. Whereas the west ruled: suicide, bomb with inflight breakup, and spatial disorientation (respectively).

The Egyptians haven't even repatriated the bodies of this A320 crash. It's been 6 months now. I wouldn't trust the Egyptian authorities. As the world learned in 1999 and subsequent to flight 990, the country's honor comes first, everything else is secondary. If the truth needs to be buried they won't hesitate.