Drone grounds flights at Sweden's largest airport

Flights to and from Stockholm's Arlanda Airport were stopped on Monday night after a pilot reported a drone flying in the airport's airspace. Planes were unable to take off or land at Arlanda - Sweden's largest airport - for 30 minutes while security staff investigated. Flights have since returned to normal, but police are still investigating the incident. A permit is required by law to fly a drone in Sweden, and further clearance is necessary to fly in controlled airspace, such as around airports. Read more: thelocal.se