Once aboard the plane, they spoke loudly in Arabic. They changed seats without authorization. They roamed the plane over the objections of the flight attendants, entering the first class area without permission or legitimate purpose. They moved their stowed luggage from the overhead bins for no apparent reason. One even attempted to open the cockpit door, explaining that he mistakenly thought it was the lavatory. Their behavior was described as disruptive and suspicious, which so alarmed the flight crew that the Muslim passengers were removed from the airplane by order of the captain.
