A top secret CIA report claims a troop of Russian soldiers gunned down a UFO only to be ‘turned into stone by the surviving aliens’.The declassified document includes allegations 23 soldiers were killed by five ETs from the flying saucer after a deadly encounter in Siberia in 1993.The document - which can be found on the official CIA website – is a translation of a report from a Ukrainian newspaper.The newspaper reports of a 250-page KGB dossier on the UFO attack, which included pictures and witness testimonies, reveals the Daily Express.The report stated the flying saucer had appeared over a military unit training in Siberia. One of the soldiers is then said to have taken it down with a surface-to-air missile.It said: “Five short humanoids with large heads and large black eyes got out.” Just two soldiers are said to have survived the encounter.The report claims five beings emerged from the crashed craft and the joined together to form a ball of light which then exploded turning 23 soldiers ‘into stone’.The report reads: “The KGB report goes on to say that the remains of the ‘petrified soldiers’ were transferred to a secret research institution near Moscow.“Specialists assume that a source of energy still unknown to Earthlings instantly changed the structure of the soldiers living organisms, having transformed it into a substance whose molecular structure was no different to limestone.”A CIA representative stated at the end of the report: “If the KGB file corresponds to reality, this is an extremely menacing case."The aliens possess such weapons and technology that go beyond all our assumptions."It is not explained in the document why the CIA held a translation of the Ukrainian newspaper report on file.According to UFO website and YouTube channel Lionsground, "you have to be careful about what the CIA publishes online, as it could be misinformation."