` ` It was a freak , unusual accident , '' says president of Society of the Blind . Investigators want to probe what caused the National Theatre 's ceiling to come down . The collapse injured scores of theatergoers , some of them seriously . ` ` It could have been a lot worse , '' he says of the ceiling .
`` It was a freak , unusual accident , '' says president of Society of London Theatre . Investigators start to probe what caused the Apollo Theatre 's ceiling to come down . The collapse injured scores of theatergoers , some of them seriously . `` It could have been a lot worse , '' firefighter says of the incident .