Footage of the Tupolev plane bringing the Polish President and top government officials to Smolensk in Russia show the plane caught fire immediately after taking off in Warsaw on Saturday morning.

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The footage will fuel concerns of foul play.

The black box flight recorders were recovered at the site of the crash by Russian authorities, and are currently being examined in Moscow.

Witnesses heard explosions shortly before the plane crashed in Smolensk, allegedly due to fog.

Other report says the fog appeared very suddenly and then disappeared after the plane crashed.

The trajectory of the plane was too low for a landing, experts say, indicating the plane was brought down by malfunction or a missile.