Australian Prime Minister Tony Abbott accused separatists in eastern Ukraine of "tampering" with evidence at the site of the Malaysian airliner.
Speaking to reporters, he said: "What we have seen is evidence tampering on an industrial scale".
He later told reporters that an Australian plane would take bodies from Ukraine to Holland.
Thousands of online users have taken to social media to call for the victims of the Malaysian airliner crash to be returned to loved ones.
United States intelligence officials admitted that they do not know who fired the surface-to-air missile that downed flight MH17.
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