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Iranian media reported that Iran's elite Revolutionary Guards had arrested the person who filmed the footage showing a Ukrainian passenger plane being shot down by a missile.

It is believed the person being detained will face charges related to national security, BBC News reported. 

Earlier on Tuesday, Iranian judiciary spokesman Gholamhossein Esmaili said that several people had been detained over the downing of the plane.

He added that about 30 people had been arrested for "taking part in illegal gatherings" - an apparent reference to recent anti-government protests.

Separately the New York Times said security camera footage showed two missiles were fired at the plane, more than 20 seconds apart.

Flight PS752 was brought down after it took off from Tehran on Wednesday last week, killing all 176 people on board.

Iran initially denied that the aircraft was hit by a missile, but later conceded that the passenger jet was hit by its air defence systems.