At least 149 people were killed and another 150 injured after they were crushed in a large Halloween crowd in Seoul on Saturday night, the city’s fire department said, in one of the deadliest peacetime accidents in South Korea’s recent history.

Iran PressAsia: The crowd surge happened during one of the most raucous celebrations of the year in the nation’s capital, where as many as 100,000 people, local news media said, had clogged the narrow streets of the Itaewon nightlife district Saturday evening for Halloween festivities.

Authorities have shared little about the official cause of deaths and injuries, but Yonhap News Agency reported people were suffering from cardiac arrest and trouble breathing.

South Korea’s president urged officials to quickly identify victims for the sake of worried families, as many revelers are still unaccounted for.

Video and photos show a chaotic scene in Seoul’s popular nightclub district, with people lying in the streets and on stretchers as emergency workers helped victims.

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