Guys, forget about robbery scenarios and all that nonsense. Forget about the cargo, tones of gold etc that might have been on board.
Nobody in the right mind and familiar with the aviation field would try something like this because you cannnot get away with something like this. Too complicated to put in practise such thing.
I personally belive this was planned but for completly other reasons which are yet to be revealed. Hopefully we will get to know one day. Without finding the plane and black boxes information is very limited.