A passenger plane skidded off the runway at an airport in South Korea's southern port of Busan, injuring at least four people on August 12, officials said.

The aircraft, operated by budget domestic carrier Jeju Airlines, was coming in to land at Kimhae Airport when it veered off.

"Four or five people were slightly injured when the plane skidded off the runway with 74 passengers aboard," one official told AFP.

The airport was closed to air traffic for about 40 minutes, he said, adding that an investigation was underway to see if there was a mechanical cause.

Yonhap news agency said the plane's left body hit the ground as it skidded through a strong wind.