Details are emerging on the horrific nightclub fire that killed at least 233 people in Brazil early yesterday morning. A band's pyrotechnic display ignited the ceiling with a flare that sent patrons running for the single exit—but bouncers suspected them of skipping on their bar tabs and initially blocked the way. Only when flames swept across the ceiling were partygoers allowed to run for it. Soon patrons outside were helping firefighters smash windows and walls in a desperate attempt to save people trapped in the club. Officials would spot several safety violations, such as the flare and a locked exit, and said the club may have exceeded capacity by 1,000 people.