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 on Friday.
The Airbus A321 plane landed at Daegu airport at around 12:40 p.m. (0340 GMT) after departing from the island of Jeju an hour earlier, the airport's flight schedule showed.
No one was hurt in the incident, but nine people were transferred to a nearby hospital after suffering breathing issues, a Daegu fire department official said.