The Dutch Safety Board is to publish a final report on why Malaysian Airlines Flight MH17 broke up over Ukraine in 2014, killing all 298 on board, BBC News reports.

Preliminary findings say it was hit by "high-energy objects from outside the aircraft", fuelling speculation that a surface-to-air missile was responsible.

The West and Ukraine say Russian-backed rebels brought down the Boeing 777, while Russia blames Ukraine. But the report will not say who was to blame.

Before the Dutch report is released on Tuesday, Russia's state arms producer Almaz-Antey - which makes Buk missiles - is expected to announce the results of its own investigation.

Senior Russian government officials have said the Dutch investigators have not been co-operating with Russian experts.

"A series of facts (about the shooting down) that were presented by Russia seem have not been taken into consideration - for reasons that we do not understand," Dmitry Peskov, a spokesman for President Vladimir Putin, said on Monday, October 12. Before the Dutch report is released on Tuesday, Russia's state arms producer Almaz-Antey - which makes Buk missiles - is expected to announce the results of its own investigation. Senior Russian government officials have said the Dutch investigators have not been co-operating with Russian experts.

"A series of facts (about the shooting down) that were presented by Russia seem have not been taken into consideration - for reasons that we do not understand," Dmitry Peskov, a spokesman for President Vladimir Putin, said on Monday.

The plane - flying from Amsterdam to Kuala Lumpur - crashed in rebel-held eastern Ukraine on 17 July 2014 at the height of the conflict between government troops and the pro-Russian separatists.

There were 193 Dutch nationals among the victims.