A platform on Seoul Subway Line 4 is crowded with commuters heading to work. /Courtesy of News1

A subway train stopped near Ansan Station on Line 4, delaying service.

According to the Korea Railroad Corporation (KORAIL), at about 5:37 a.m. on the 22nd, a subway train operating on the up line between Singil-oncheon and Ansan stations on Line 4 broke down and came to a stop.

It was found that no passengers were on board the train at the time of the breakdown. The following up-line train is temporarily operating on the down line.

As a result, five trains were delayed by about 10 to 40 minutes. In addition to Line 4, service on the Suin-Bundang Line and the Seohae Line is also partially delayed.

The Korea Railroad Corporation (KORAIL) plans to bring the faulty train into the depot and investigate the cause.

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