No, no expertise in hijacking!
But if you look at it in terms of event planning, what is needed to run the event, (and 'staff' with the right expertise an access, and in this case mitivation) then it's pretty obvious (well, to me) that this would take considerable time in the planning stages. So yes, I think valuable cargo would also be opportunistic not the original target.
Assuming it is criminal/terrorist/piracy type aim, not suicide by pilot (for which the plans/logistics would be far simpler, but the actual diverted light path before disapperance just as inexplicable).