Commuters wait for trains on a crowded platform at Yongsan Station of Seoul Subway Line 1, Wednesday, due to a power outage. Yonhap

A power outage disrupted services on Seoul Subway Line 1 on Wednesday morning, the train operator KORAIL said, causing major delays and chaos for commuters during the morning rush hour.

The power outage occurred on the southbound section between Changdong Station and Sinimun Station in northern Seoul at 7:29 a.m., leading to train delays and service disruptions across the entire Line 1 route, according to KORAIL.

The operator suspended southbound train services on a wider section between Dobongsan Station and Cheongnyangni Station for emergency repairs but had not restored power as of 9:30 a.m.

As the train service disruptions continued for several hours, major stations were crowded with passengers waiting for delayed trains.