Mysterious footage shows what appears to be a UFO flying in the sky over west Siberia.
Russian experts are analysing footage of the glowing spherical shape shooting across the sky over the oil cities of Surgut and Nefteyugansk amid disagreements over the dramatic phenomenon.
A number of witnesses caught the ‘greenish glowing ball’ on tape and posted them online.
A major Russian TV station claimed the UFO was ‘either a meteor or aliens’. The spherical, glowing orbs of light were spotted throughout the Russian province.
Other theories were a Russian missile or space rocket but Russian emergency officials said there had been no reports of meteorites or other mystery objects hitting the ground.