Russia's defence ministry hit back at claims it supplied weapons to pro-Russian separatists in Ukraine. In a statement, it said they did not detect any missiles launched near the path taken by the passenger plane, and asked the US to share satellite images "if they have them".
The ministry said it did not deliver any SA-11 Buk missile systems, "or any other weapons" to separatist fighters.
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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