Ukraine has released video it says is evidence a Russian Buk missile system was smuggled into rebel-controlled eastern Ukraine just before Malaysian Airlines flight MH17 was shot down.

Counterintelligence chief at Ukraine's national security service, Vitaly Nayda, says a Buk-M1, also known as the SA-11, missile system was moved into pro-Moscow territory in Ukraine around 1 a.m. on Thursday.

"We have compelling evidence that this terrorist act was committed with the help of the Russian Federation. We know clearly that the crew of this system were Russian citizens," he told a news conference.

Reuters reports: "Calling on Russia to give Ukraine the names and surnames of the crew so that Kiev could question them, he said the three systems had now been moved back to Russia, showing journalists pictures of the missile systems in various locations.

"We know about the three people who came together with these systems from the territory of Russia", Nayda told a news conference.

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