The Malaysian prime minister has welcomed the arrival of the train carrying the bodies of flight MH17 victims to the city of Kharkiv.
Najib Razak said the Malaysian Airlines jet's black boxes appeared to be "in good condition" after they were handed over by separatist leader Alexander Borodai.
Razak said: "These were extraordinary circumstances which called for extraordinary measures.
"There were risks involved in pursuing this agreement. But we felt an obligation to explore all avenues to break the impasse, and secure the return of the remains and the black boxes".
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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