A cluster of mysterious lights hovering over Moscow has sparked Unidentified Flying Objects (UFO) sighting rumours in the country. The video, which has so far been viewed by more than 97,000 people, was originally posted by a user called Timur.

In the video, the suspicious objects can be seen flying in a peculiar manner sparking speculation that the objects can be a cluster of UFOs.

"There were four balls of light. A red one to the left, two white ones in the middle and a less bright one to the right. Sometimes the one on the right would disappear and come back. All together, they made the geometric shape of a rhombus," he told local media via News.

"I've been living in the district for two years, and have never seen anything like that before," he added.

While many viewers have debunked the video as fabricated, Vadim Chernobrov, an UFO expert from Russia, has claimed that the mysterious flying objects are authentic. "The lights cannot be explained as either an atmospheric or a cosmic image. The chance of it being some sort of mirage is also impossible due to the precise geometric form the objects have formed," he said.

He also insists that the movement of the objects suggest they cannot be Chinese lanterns or glowing night kites.

"Some have said they could look like Chinese lanterns but I would dismiss this possibility because of the movements and speed of the objects."

Another video uploaded on 4 February on video sharing website YouTube also claims sighting an unidentified object crashing to the land from the sky. The suspicious object was spotted over Kemerovo in Russia and the person who uploaded the video claims it is "too slow to be a meteorite."

Many such reports of UFO sightings keep coming in from various countries, which are mostly approved by UFO enthusiasts and researchers, but none have been confirmed by state governments or their official space research organisations.

Recently, the Central Investigative Authority of the US released a series of confidential documents related to UFOs and suspicious "alien activities" in different parts of the world in the 1950s.