The Russian military says the missile that shot down Malaysia Airlines Flight 17, killing all 298 people on board, came from the arsenals of the Ukrainian army, not from Russia.
The jet was shot down by a Soviet-made missile over rebel-held eastern Ukraine in July 2014, about 40km from the Russian border, where fighting had been raging for months between Ukrainian forces and Russian-backed separatists. There were 27 Australians on board.
The Netherlands and Australia announced in May they believe the missile was transported to Ukraine from a military unit in the Russian city of Kursk.
Russia has vehemently denied involvement and has over the years come up with various theories as to the cause of the crash, generally laying the blame on the Ukrainian side.
Lt Gen Nikolai Parshin, chief of the Missile and Artillery Directorate at the Russian defence ministry, told reporters on Monday that the military had studied and declassified archives at the research centre outside Moscow that produced the Buk missiles after the Dutch investigators displayed parts of the missile and their serial numbers.