 Other firefighters were immediately aware that they were now dealing with a genuine emergency rather than a demonstration, but initially most of the spectators did not realize anything was amiss, taking the cries for help they heard to be part of the performance, and reportedly cheering and applauding what they believed to be realistic and spectacular effects until they witnessed two boys with their clothing ablaze jump to their deaths from the top of the structure.The fire was extinguished within a few minutes, but had been of such intensity that 13 people died at the scene.Two victims were rescued alive, but both died of their injuries in the hospital, St Bartholomew's, for which they had been intending to raise funds, bringing the final death toll to 15.