Heather Wade, who hosts a radio show on the paranormal, says she has found proof the UFO really did crash land in New Mexico, US, back in 1947.
She insists she has got her hands on an “ultra top secret” US Defence Intelligence Agency document from an unnamed source.
She claims the dossier details how the UFO crashed on July 2 or 3, 1947.
A weird flying disc smashed into a ranch in Roswell.
The US military stated that it was merely a weather balloon but conspiracy theories have flourished ever since.
Wade claims it describes how four decomposing alien bodies were found two miles from the crash site a week later.
More than 40,000 Americans have taken out insurance against being abducted by aliens.
“This is probably the work of someone in Ufology”
The alleged government report says: “Aerial reconnaissance discovered that four small human-like beings had apparently ejected from the craft at some point before it exploded.
“These had fallen to earth at least two miles east of the crash site where the wreckage was located.
“All of the four alien crew members were dead and badly decomposed.”
A statement on the website for her radio show, Midnight in the Desert, reads: “Heather Wade received documents last night from a trusted source.
“At this time we can find no evidence of forgery.”
But the documents have been dismissed as fake by British UFO investigator Nick Redfern.
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He said with the 70th anniversary of the Roswell incident next month the timing was too suspicious.
He said on Facebook: “While I don’t know who faked those new MJ12 documents, there’s not a chance this is disinformation by a government agency.
“This is probably the work of someone in Ufology, who is just waiting for certain UFO researchers to endorse the documents – and then the hoaxer will come forward and explain how and why he did it.”