Stewards discovered a stowaway on a UK-bound flight heading from Barcelona to Gatwick. Armed police escorted the woman away from the plane as she refused to leave.
The intruder had slipped past the security check in Barcelona and entered the Norwegian plane.
Passengers panicked as the stewards announced that armed police would enter the plane to remove the intruder. Since the passengers did not know excactly what was going on, several passengers rushed to get off the plane, fearing that the intruder was a terrorist.
The 177 passengers were reboarded and the flight arrived Gatwick two hours late.