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.

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.

A Jeju Air passenger jet carrying 181 people from Bangkok sped off the runway and burst into flames. Two crew were rescued in what was the country’s worst air disaster in decades.

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,

Ultimately, the plane crashed, killing 179 people in South Korea’s worst aviation disaster. A standard pre-flight inspection found “no issues” with the Jeju Air passenger plane before it crashed.

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.

Joo Jong-wan, the deputy transport minister for civil aviation, acknowledged that safety measures were not sufficient when building the embankment, but said they were done in line

South Korea's rival parties agreed Tuesday to form a joint task force to probe the recent Jeju Air plane crash that left 179 people dead, as the transport minister offered to resign over the tragedy.