The helicopter crashed during the extinguishing of a forest fire, falling to the mountain, the agency notes.
A helicopter pilot became a victim of a plane crash.
According to Yonhap, the crash occurred at a distance of about 100 meters from the fire site.
The incident occurred with the Bell 206L helicopter, made 44 years ago.
The cause of the plane crash is being investigated, in particular, there is a survey of witnesses of the incident.
Journalists note that on March 26, in the same part of South Korea, another fire helicopter was crashed, which extinguished the forest fire, and then the pilot also died.
The Sinhua agency writes that on Sunday, five fire helicopters were involved in South Korea to extinguish a forest fire.
