A firefighting helicopter crew member died Monday during operations in the Gangwon Province of South Korea.

According to The Korean Times, the man “passed out as the aircraft made an emergency landing in Samcheok.” He was pronounced deceased after he was transferred to an area hospital, and early indications suggest the helicopter was forced to land after striking a high-tension power line.

At least 60 helicopters and 10,000 people have been mobilized for firefighting efforts in three areas, and residents across the region were urged to evacuate, the Korea JoonGang Daily reported.