Seventy-six people have been injured, seven seriously, after part of a ceiling in London's Apollo Theatre collapsed during a show, police say.
The venue in Shaftesbury Avenue was packed for a performance of The Curious Incident Of The Dog in the Night-Time.
Eyewitnesses heard "a crackling" noise before the collapse at about 20:15 GMT. Theatre-goers left covered in debris.
The Apollo's owner described it as a "shocking and upsetting" incident and said an investigation was under way.
A total of 51 people were taken to hospital but there were no life-threatening injuries.
The London Ambulance Service said there were 81 walking wounded and that all those who were trapped earlier had been freed.
It said 25 ambulance crews and an air ambulance attended the scene.
London Fire Brigade said its "search is now complete" and the theatre has been sealed off.