A 12-member boyband known as Mirror performed a live set on the main stage of the E-Sports and Music Festival in Hong Kong.

The show came to a shocking halt when a humongous LED screen that was hanging high above Hong Kong Stadium came crashing down and landed squarely on top of one of the group’s backup dancers, amid a wave of screams from the onlookers in the crowd. The dancer sustained serve injuries and is reportedly at a hospital in critical condition. The horrific incident has prompted an investigation by the government that may last up to several weeks.