A bridge collapsed at an expressway construction site in Cheonan, South Korea on Tuesday, killing three workers and injuring five others, authorities said.
The accident occurred at around 9:50 am in the city some 80 kilometers south of Seoul during construction on a section of the Seoul-Sejong expressway.
Five 50-meter-long steel beams holding up the bridge collapsed one by one while workers were using a crane to move steel beams between piers.
The eight killed or injured were working underneath the bridge.
The National Fire Agency said it has issued an order mobilizing firefighters to search for people missing in the accident.
Acting President Choi Sang-mok gave emergency instructions to deploy all available resources and personnel for the rescue operation.
Bd-Pratidin English/ARK
