(ATTN: RECASTS headline, lead; UPDATES throughout with additional casualty; CHANGES photo)
GWANGYANG, South Korea, Nov. 24 (Yonhap) -- Three people were killed in an explosion that occurred at a plant operated by South Korea's top steelmaker, POSCO, on Tuesday, fire officials said.
The incident took place at around 4 p.m. with a roaring sound at its plant in Gwangyang, 420 kilometers southwest of Seoul, involving a blaze that was put out in about 20 minutes, according to the officials.
Authorities said the explosion appears to have started near a furnace while workers were handling high-pressure gas, adding that they are looking into the exact cause of the incident.
Anger mounts over deepfake porn targeting Korean female celebs; more than 330,000 sign petition
Biden's pick for Asia policy likely to seek stronger regional alliances to check China
Iran's oil tanker seizure appears aimed at pressuring S. Korea to unlock frozen assets: experts
S. Koreans feel pinch of rising housing costs amid economic downturn
China's push for FTA with S. Korea, Japan appears aimed at checking U.S. influence