According to RT.com, the serial numbers were marked on the engine and the nozzle of the missile.

Investigators found the serial numbers on the debris of the Buk missile.

Gen Nikolay Parshin told reporters that based on a document trail of the Buk missile, it was produced at a military plant in Dolgoprudny in 1986.

The missile was later shipped to a military unit located in what is now Ukraine.

“The evidence disproves the accusations by Ukraine and some other parties that claimed a missile fired by a launcher, secretly delivered from Russia, was responsible for the downing of MH17, the ministry of defence report said,” RT.com wrote.

In May, prosecutors investigating the downing of MH17 over eastern Ukraine in 2014 said they had identified the missile used to shoot down the plane as coming from Russia’s armed forces.

Reuters reported that Wilbert Paulissen, head of the crime squad of the Netherlands’ national police, said the missile was fired from Russia’s 53rd Anti-Aircraft Brigade.

But Russia denied involvement in the incident.

Flight MH17 was flying from Amsterdam to Kuala Lumpur when it was shot down on July 17, 2014 over eastern Ukraine, killing all 283 passengers and 15 crew on board.

RT.com also reported that Russian officials intercepted communications of Ukrainian officials in 2016, discussing the risk of flying through restricted airspace over Ukraine.

“Among a barrage of complaints, one phrase says unless the restrictions are respected ‘we’ll f***ing f**k up another Malaysian Boeing’,” the news portal wrote.

According to the report, the Russian military claimed the complaints came from one Col Ruslan Grinchak, who supposedly serves in a brigade responsible for radar control of the Ukrainian airspace.