A pilot and 10 skydivers were killed Saturday when their plane crashed in Namur, Belgium, not far from Brussels, authorities said. Belgian Fire Service spokesman Eric Lambert told CNN emergency crews were sent to the scene of the crash. Namur officials said Belgian King Philippe, Prime Minister Elio Di Rupo and Interior Minister Joelle Milquet also went to the scene. Officials said an investigation was under way to determine the cause of the crash about 10 minutes after the plane took off.