South Korea grounded an aging fleet of military helicopters on Monday after a chopper crashed during a training exercise and killed two people on board.
The AH-1S Cobra was training for emergency landings when it "crashed due to an unidentified cause" in Gapyeong county west of Seoul, the army said in a statement.
Two service members were taken to hospital and later pronounced dead, AFP reported.
Photos in local media showed the helicopter's crumpled fuselage lying on a rocky river bank.
"Following the accident, the Army has suspended operations of all aircraft of the same model" and is investigating the cause, the forces said.
The AH-1S Cobra is a US-made, single-engine anti-tank attack helicopter.
Some of those used by South Korea's military are more than 30 years old. It is not clear how many are currently in service.
The country's defense acquisition agency said in 2022 that the Army's Cobra helicopters were "scheduled to be retired" as domestically developed light-armed choppers started flying.
