Police begin investigation of highway bridge collapse that killed 4 workers

Back on the local front.

An investigation is underway to uncover the cause of the collapse on Tuesday of a bridge under construction.

Police said on Wednesday, they were questioning on-site officials from the main construction company, Hyundai Engineering, and subcontracting companies.

There were 10 casualties in the collapse, including 4 who were killed.

Officers say it would take some time to get statements from the surviving construction workers, because some were seriously injured and are in an intensive care unit.

The catastrophe happened in Anseong, south of the capital Seoul, at the site of the bridge construction over a steep valley on the Seoul-Sejong Expressway.