A Russian investigative committee on Thursday said that the plane was shot by a Ukrainian missile.
"The Ukrainian side was officially warned, and 15 minutes before the plane entered the zone they were given complete information," Andrei Kartopolov, a former general with close ties to Russia's Defense Ministry, told lawmakers.
Ukraine has denied Russia's claim that it had received information about the aircraft.
Ukrainian military intelligence spokesperson Andriy Yusov said that Kyiv had received no requests from Russia to refrain from attacks in the airspace where the plane was shot.