Officials say the black boxes of a Boeing jetliner that crashed in South Korea last month stopped recording about four minutes before the accident.

Flight recorders from the passenger jet that crashed in South Korea last month, killing more than 170 people, stopped working minutes before the plane belly-landed and exploded on the runway, investigators said Saturday.

Jeju Air flight 7C2216’s flight recorders have been recovered after crash that killed 179 people, but authorities say data relating to crucial 4 minutes prior to crash are missing

The black boxes of a plane that crash-landed and burst into flames in South Korea last month stopped recording about four minutes before the incident that killed 179 people onboard, according to transport officials.

The last four minutes of data before the disaster which killed 179 people are missing, transport authorities say.

Key data has been retrieved from one of the black boxes on the Jey Air Boeing 737-800 following its crash at Maun International Airport, in southern South Korea, on Sunday

The damaged flight data recorder had been deemed unrecoverable for data extraction by South Korean authorities, who sent it to the United States for analysis at the US National Transportation Safety B

The missing data deepens the puzzle of what caused the deadly air disaster in Muan, South Korea, late last month.

Authorities have said black boxes holding the flight data and cockpit voice recorders stopped recording around four minutes before the crash.