South Korea will release by Monday a preliminary report on last month's Jeju Air plane crash that killed 179 people, the deadliest air disaster on the nation's soil, the transport ministry said on Saturday.

South Korea will remove a concrete structure at the runway of one of its southern airports, the scene of a plane crash that killed all but two of the 181 people on board last month.

The crash of Jeju Air Flight 7C2216 killed 179 people on December 29 when the aircraft slid down the runway at the Muan International Airport and slammed into a concrete embankment. There were only two survivors,