Passengers on board the hijacked Ethiopian Airlines plane in Geneva have been searched by police as they disembarked the aircraft.
The passengers then boarded a bus near the plane, which was parked near the end of the runway away from the terminal building.
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Guillier conceded a "severe defeat" defeat to his supporters as the result came in.
The outage struck Hartfield-Jackson Atlanta International Airport at around 1pm local time, stopping all outgoing flights.
It will be a chilly day for many parts with the highest temperatures, about 10 Celsius (50F) in the far northwest.