London, Dec 18 (ANI): A huge pyramid-shaped UFO was spotted hovering over Russian capital Moscow's Krelim city.
The movement of the unidentified flying object was captured on camera and the footage rocked Russian TV network.
Witnesses said the object, similar to Darth Vader's Imperial Cruiser in the Star Wars films, could be a mile wide.
The footage was shot at night from a car and during the day by another amateur.
Nick Pope, who worked on the MoD's UFO desk for three years, called it "one of the most extraordinary UFO clips I've ever seen".
"At first I thought this was a reflection, but it appears to move behind a power line, ruling out this theory," the Sun quoted him as saying.
However, Russian reports ruled out UFO speculation, claiming police would have received reports. But the cops refused to comment.
Web theorists suggested an air balloon or stunt, but a spokesman for aerospace experts Jane's News said: "We have no idea what it is." (ANI)