South Korea's government said on Monday it will extend the shutdown of Muan International Airport by a week to Jan. 14, citing the ongoing investigation into the crash of a Jeju Air jet that killed 179 passengers on board.

Authorities also raided the regional aviation office in Muan, part of Busan’s aviation administration. Read also: Black box data recovered in South Korea’s deadliest plane crash; another sent to U.S.

The deadliest accident in aviation history occurred in 1977, when two Boeing 747 jumbo jets collided on a foggy runway on the Spanish island of Tenerife, killing 583 of the 644 people on board the planes. Spanish investigators blamed the captain of the KLM 747 for taking off without clearance from air traffic controllers.

A plane carrying 181 people crashed at Muan International Airport in South Korea, killing at least 85 people, emergency officials said. "So far, two rescued and 85 dead," the National Fire Agency said in a statement,

Several questions have been raised over the Jeju Air plane crash that claimed 179 lives at Muan International Airport on Sunday.

A jetliner skidded off a runway, slammed into a concrete fence and burst into flames Sunday in South Korea after its landing gear apparently failed to deploy.

South Korea was set Friday to move the tail section of the Jeju Air plane that crashed last week, killing 179 people in the worst aviation disaster on its soil, officials said.The investigation is headed by South Korean air safety officials,

South Korean investigators said Saturday they were close to finalising the transcript of the cockpit voice recorder from a fatal plane crash that left 179 people dead last week."The transcript of the cockpit voice recorder (CVR) is expected to be completed today,

South Korean police raided the offices of Jeju Air and the operator of Muan International Airport Thursday as they step up a probe into the fatal crash of a Boeing 737-800 that killed 179 people.