An explosion at a Hanwha Aerospace defense plant in Daejeon, South Korea, has killed at least four people and injured two others.
According to the Yonhap news agency citing local police, the blast occurred at 10:59 a.m. local time.
President Lee Jae-myung has ordered all available resources to be mobilized for rescue operations.
Firefighters are working to extinguish the fire that started after the explosion. Rescue efforts are ongoing.
Preliminary investigations suggest the explosion was caused by the ignition of fuel used in engine systems on the first floor of the plant.
