- 2 updates
The US military claimed one of its helicopters carrying Marines executed a hard landing near the North Korean border "while conducting routine flight operations".
A statement said the US Marine Corp. CH-53E Super Stallion had 21 people on board including five crew members, all of whom were taken to hospital.
Fifteen people have been released from hospital and six are in a stable condition.
"A comprehensive investigation will take place to determine the facts and circumstances surrounding this incident", the statement added.
A statement is expected imminently from the US Marines following reports that an American military helicopter crashed near the North Korean border.
French news agency AFP said a CH-53 Sea Stallion helicopter was taking part in a joint drill with South Korean allies when the incident occurred but reported no casualties.
The Yonhap news agency said the helicopter came down in Cheorwon province, which borders North Korea.