India, April 15 -- A declassified document posted to the CIA's website is raising eyebrows with its bizarre claims of an alleged UFO attack on Soviet forces. The one-page report, which has recently gone viral online, summarises articles published by Canadian Weekly World News and the Ukrainian newspaper Holos Ukrayiny - and was first released to the public in May 2000.

Though the incident reportedly occurred during the Cold War era, it only came to light after the fall of the Soviet Union, when the CIA is said to have obtained a 250-page KGB file detailing the strange encounter.

After the Soviet Union collapsed in 1991, the CIA reportedly got hold of a 250-page KGB file describing the bizarre incident, which supposedly took place during...