An explosion and subsequent fire at a Hanwha Aerospace facility in Daejeon, South Korea, kills five workers and injures two others, according to authorities and multiple reports. Emergency services receive the report at 10:59 a.m. on Monday, after which police and fire officials respond to a blaze at the site. Officials believe the explosion originates on the first floor, in or near a laboratory area where seven workers are carrying out cleaning operations involving explosive materials. Hanwha Aerospace says the workers were removing residue from tools used in production related to propulsion systems. Two injured workers escape from the facility themselves; one is badly burned and remains hospitalized, while the other suffers minor injuries and is treated. Authorities also say bodies are severely damaged, making victim identification difficult. Firefighters bring the blaze under control about 50 minutes after it breaks out and fully extinguish it by early afternoon. Police and fire investigators plan to determine the exact cause of the blast once the fire is fully out. Hanwha Aerospace and Hanwha Group issue an apology and pledge a full investigation, noting it is among the latest fatal incidents at the Daejeon plant, following previous explosions in 2018 and 2019.