THE United States secretly holds the remains of seven crashed UFOs and 27 dead aliens that were on board them, according to a sensational allegedly leaked report from the country's Defense Intelligence Agency (DIA). The bombshell claims have sent conspiracy theorists, who believe the document could be genuine, into overdrive. Today, Express.co.uk revealed how the alleged 47-page document emerged today, including a report that claimed the 1947 Roswell UFO crash actually happened and was covered up. A six-page section on Roswell said the US military recovered fragments of a destroyed flying saucer outside Roswell and four decomposed aliens. The full report claims a further six UFOs have been found and 23 more bodies. The document, which has already been branded an elaborate hoax by some UFO experts, also includes a four-page report on an alleged top-secret group set up by the DIA in the wake of the Roswell incident. Operation Majestic 12 is said to be an "above top-secret" intelligence