The US security has been questioned after a gyrocopter flew into the restricted airspace over the Capitol building in Washington, D.C., on Wednesday
The military said that it had been unaware of any aircraft flying and was only informed after it landed.
According to ABC News, US Capitol Police said that the pilot Douglas Hughes was arrested after landing his gyrocopter on the West front of the United States Capitol building.
The United States Northern Command and North American Aerospace Defense Command (NORAD), the military organizations responsible for protecting the capital region airspace, said that they never saw the aircraft.
Spokesman Michael Kucharek said that NORAD involvement was not there. He deferred questions about who may have detected it first to the US Capitol Police and the Federal Aviation Administration (FAA).