The claims about the incident – known as the Bureya Bliztkrieg – come amid a new report which said a “reliable” witness saw a “huge green-coloured body with a very long tail” streaking vertically downwards in the night sky on December 15.

The bizarre event, which took place last month, is under Russian scientific scrutiny after the water flow into a hydro-electric power reservoir was cut due to a massive landfall, creating a 525ft mound which was visible from space rising from the bed of Bureya River in the far east of Russia.

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