8 days later
Pretty much everything said by ANY official (ie government of anywhere) source has been blatant propaganda and/or provocation of the other side(s).
The likeliest source of the missile was the separatists: they had one since June 28 (liberated from Kiev forces) and had been shooting down approaching aircraft in the area for a month. They themselves have no aircraft so Kiev would not be using missiles, so can't have made a mistake -- trigger happy half trained separatists fearing being attacked could have. cg USS Vincennes.
They arranged finding and collecting the bodies (while the world accused them of doing it to destroy evidence while at the same time criticising leaving the bodies to rot). They did not let in anyone they didn't trust -- which around there, in the time frame, would have been Kiev people who could not be trusted (they are a war with them, remember?) They quietly negotiated to hand over bodies to the Netherlands and black boxes to Malaysia.
As Government forces have stepped up- bombardment of separatist areas, there is now open war within 30 or 40 miles of the crash site, and the separatists are too busy fighting to keep guarding the site -- but most foreign investigators are afraid to go. Kiev cannot guarantee their safety as they have no control of the area, while the separatists who do have control feel they've done their bit (even if it WAS their error that started it) and can't be sure forces won't be brought in to surround them, under guise of investigators and their security teams.
The few investigators on the ground are finding more bodies, and these will somehow be removed. Passengers' property held for safe keeping will be somehow handed over if they can find out who to (locals approached journalists with passports in the first days).
Finding missile parts will prove nothing, as everyone in that area - Kiev, separatists and Moscow - all have identical ones. They are unlikely to find the very bit with the serial number.
This is the most publicly documented air crash in history. Just from what fell where, it is possible to piece together that
* the missile hit some miles west of Petropavilvika village
* the front roof section and most business class passengers detached and fell in that village
* the rest kept going to Grabova village, the rear section landing in trees after spilling more passengers
* the main centre section turned into a fireball on impact another mile away.
Locals went out and cleaned up as they could. Today they're being criticised for harvesting (their livelihood) in fields that "may" contain a bit of useless debris.
The one perpetual machine in the world is the propaganda machine.