Sixteen people have been confirmed dead and many others seriously injured when a ventilation grate collapsed while fans were watching an outdoor concert in Seongnam, south of Seoul.
Rescuers said 16 were confirmed dead, but added the death toll might rise with some of the injured understood to be in critical condition.
More than 700 fans were believed to be attending the 'Pangyo Techno Valley Festival' outdoor concert which included performances by K-Pop girl band 4Minute along with T-ara, Junggigo, 2Bic and Cherry Filter.
UPDATE: Cube Entertainment, 4Minute's music label, have released a statement.
The company have said: “There is no way to measure the amount of grief in our hearts. The concert wasn't 4minute's solo concert and other artists also attended. The members and staff didn’t know what had happened during their performance and only learned of the accident on their way back to Seoul. We hope no more people are hurt because of this incident.” (source: Osen)