At least two Hong Kong dancers were injured on Thursday night after being hit by a falling screen at a concert of the city's most popular boy band Mirror.
Footage of the incident circulated online showed a group of white-clad dancers performing onstage at the Hong Kong Coliseum when a giant overhead video screen fell and crushed a man.
The screen then toppled onto at least one other person before the remaining performers rushed to help.
Mirror's manager Ahfa Wong later took to the stage to apologise and asked the audience to leave, according to video clips circulated online.
Two male dancers were taken to hospital while conscious shortly after 10.30pm local time, police told AFP.
At about midnight, the city's Queen Elizabeth Hospital said one man with a neck injury was in a serious condition, while another was in a stable condition after a head injury, Hong Kong media reported.
Over the past year, Mirror have emerged as the most popular Cantonese pop act and is credited with revitalising Hong Kong's local music scene.
The 12-piece's latest concert series, originally scheduled to run from July 25 to Aug 6 at the prestigious Coliseum, was eagerly anticipated by fans and tickets were quickly snapped up.
But the series has been plagued by technical faults since debuting on Monday, leading fans to question if the show was safe. More than 10,000 signed a petition urging organisers to take better care of performers.
On Tuesday night one Mirror member, Frankie Chan, fell about a metre off the edge of the stage, though he later said on social media that he only bruised his left arm, according to the South China Morning Post.
Other fan-filmed clips of the concert showed walkways wobbling under the weight of performers and some stars missing their steps in the dimly lit space.
Photos of the aftermath of Thursday's incident showed police, paramedics and production crew on stage.
The entertainment company behind Mirror did not immediately respond to AFP's request for comment.
