MOSCOW - The Russian maker of the Buk air defense missile system said on June 2 that it has concluded that Malaysian Airlines flight 17 was downed by an older version of the missile, which isn't in service with the Russian military but is in Ukrainian arsenals.
Murder In The Sky: Malaysia Airlines Flight MH17
Associated Press: MH17 shot down by Ukrainian missile – Russian missile maker

Pro-Russian gunmen stand guard as Dutch investigators (unseen) arrive near parts of the Malaysia Airlines Flight MH17 at the crash site near the Grabove village in eastern Ukraine on Nov. 11, 2014