Elevated parts of a highway under construction collapsed in South Korea on Tuesday, killing two workers and injuring seven others, officials said.
Fire agency officials said rescue workers were trying to find the missing worker.
Acting President Choi Sang-mok urged authorities to mobilize all available personnel and equipment to salvage the workers.
Ten people were working on the site in the city of Cheonan, about 90 kilometers (55 miles) south of Seoul.
They fell when it collapsed and were trapped in the rubble, the National Fire Agency said.
