Dhaka, Feb. 26 -- At least four people died and six were injured on Tuesday after a collapse at a highway construction site in an area south of the South Korean capital, Seoul, fire authorities said.

The accident took place at 9:49am (0049 GMT) in Anseong, about 70 km (43.5 miles) from Seoul, when five 50 metre (164 ft) concrete structures supporting the highway bridge collapsed one after another after being hoisted into place by a crane, the Yonhap News Agency reported.

Ko Kyung-man, an Anseong fire official, said that four people had died, including two Chinese nationals, and six were injured, including five who were in a critical condition. The five also included one Chinese citizen.

"They were working to install a deck on the bridge,...