"There was sadly nothing I could do to stop it," said Branson.
The U.N. Office on Drugs and Crime quickly said the document was neither finished nor formal.
Richard Branson's #BransonToBranson April Fools' Day hoax may have pushed the Branson, Missouri, mayor out of office.
The founder of Virgin announced the company would be moving its U.S. headquarters to Branson, Missouri.
Virgin Galactic technicians have begun construction on a second spaceship to replace its ill-fated predecessor which crashed last week, killing one test pilot
Investigators said that a feature for re-entering the atmosphere had deployed earlier, adding that pilot error could not be ruled out
"The second spaceship is getting close to readiness," he said, adding that it could be ready to fly by next year once the probe by the National Transportation Safety Board reached its conclusions.
Virgin Galactic's SpaceShipTwo went down during a powered test flight, which killed one pilot and injured another.