Updated - Firefighting helicopters last night battled a spectacular blaze atop an under-construction Moscow skyscraper, planned to be Europe's tallest building.

Orange flames leapt about 250 metres (880 ft) visible in the night sky to much of the city.

No injuries were reported at the fire in the eastern tower of the Federation Tower complex, part of a massive development along the Moscow River about 2.5 kilometres (1.5 miles) west of the Kremlin.

The cause of the fire was not immediately known.

The tower, when completed, is to be 360 metres (1150 ft) tall.

The fire was put out late in the night.