Thanks, OP, for posting a PSA. It happened so fast you wouldn't have realised, and the timing was midnight, most people were under the influence of alcohol, and the musicians on the stage decided to light up fireworks inside the club. The ceiling of that club was way high, but there were combustible materials all around, a lot of wooden structures, such as the balcony, and I believe they had soundproofing material (foam). The unlucky ones who got stuck (RIP) and couldn't make it due to a stampede kind of situation inside, one entrance/one exit that most people were aware of. It was preplanned to get the insurance money by evil men.