Dr Steven Greer, who led the project and documentary, has hit back at critics who claim the body is a hoax. 'The CAT scan clearly shows internal chest organs -lungs and what appears to be the remains of a heart structure,' he said. 'There is absolutely no doubt that the specimen is an actual organism and that it is not a hoax of any kind. 'This fact has been confirmed by Dr. Nolan and Dr. Lachman at Stanford.'