Reuters International

SEOUL (Reuters) - Four workers were killed and eight injured when a subway construction site collapsed near the South Korean capital, Seoul, early on Wednesday, the fire department in the city of Namyangju told Reuters.

The cause of the collapse had not yet been determined, the fire department and the Korea Rail Network Authority said.

The subway line extension was planned to start operation in 2020.

(Reporting by Nataly Pak; Editing by Paul Tait)

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 Reuters International