Prosecutors said the men were questioned for several hours about the blaze which started when firework set off by band performing in the venue ignited the insulation foam on the pillar and spread quickly.

检察官称警方就起火原因对三人进行了数小时的盘问，当时乐队燃放的烟花引燃了柱子上的绝缘泡沫，并迅速蔓延。