According to a top secret document posted on the official CIA website – 23 Russian soldiers died in a macabre way as a result of a battle with a group of 5 aliens in Siberia in 1993. 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 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.
Below is a PDF document of the report and a link to the CIA website