The airport terminal at Keflavik airport has been evacuated. The reason is that an aeroplane from an airport that does not fulfil international relulations about security screening was referred to the wrong gate after landing.
When passengers disembarked the aircraft, they mixed with other passengers who had undergone regulated security screening at Keflavik Airport.
Under such circumstances the terminal has to be evacuated to ensure that all passengers within the security zone have undergone the security screening required according to regulations.