Asiana Airlines officials say man pulled lever to open emergency door shortly before landing

South Korean police have launched an investigation after Asiana Airlines said a passenger opened a door on a flight shortly before the aircraft landed safely in the city of Daegu.

The Airbus A321 plane landed at Daegu airport at about 12.40pm (0340 BST) after departing from the island of Jeju an hour earlier, the airport’s flight schedule showed.