A memo, released by FBI’s online resource website The Vault, appears to confirm the 1947 Roswell UFO incident, Daily Mail reported Saturday.

An alien spacecraft allegedly crashed in the town of Roswell, New Mexico on July 2, 1947 and since then the incident has been the subject of controversy and conspiracy theories.

The memo written by Guy Hottel, the special agent in charge of the Washington field office in 1950, shows the description of flying saucers and alien life inside the machine.

Titled “flying saucers information concerning,” the memo said “an object purporting to be a flying disc was recovered near Roswell, New Mexico.”

It said the object looked like “a high-altitude weather balloon with a radar reflector,” and detailed the description, depicting as “hexagonal in shape and suspended from a balloon by cable.

“Each one was occupied by three bodies of human shape but only three feet tall,” Hottel said.

“The bodies were dressed in metallic cloth of a very fine texture. Each body was bandaged in a manner similar to the blackout suits used by speed flyers and test pilots,” he wrote.

The bodies of aliens were reported to have been transported for examination and autopsied by the U.S. military.

The alien autopsy footage claimed to have been taken by the U.S. military created a sensation worldwide. However, video entrepreneur Ray Santili later admitted that it was just the reconstruction of what would have happened in Roswell in 2006.