Islamic Republic of Iran.
Hopefully the investigators will analyze the flight simulator found at the pilot’s home. My guess is that it was used for planning the route and/or training the stolen-passport holders. Deleted files are likely to have answers if they can be recovered. It might even give clues to where they intend to crash the plane later. Would be interesting to know how much fuel the plane had,and effective range without refueling.
This is really awful for the victims’ families.