The firestarted after the launch of fireworks during a performance of themusical group on stage, reports Korrespondent.
Sparks hit the ceiling where there was soundproof foam,and from there the flames began to spread. At the time of thetragedy there were about two thousand people inside.
Rescuers have notyet completed the work on the scene. According to Police MajorGerson da Rosa Ferreira, some of the victims suffocated, and somewere killed in the stampede. The ensuing fire caused panic amongthe visitors and many people could not get to the emergencyexit.
The guards of theBrazilian nightclub were blocking the only way out in the firstminutes of the fire.
According to headof the Rio Grande do Sul fire department Colonel Guido de Melo,citing witnesses this blocking created panic and led tostampede.
"According to thepeople who were inside, security guards blocked the exit which didnot allow for rapid evacuation. This caused even more panic andstampede," said the head of the fire service.
According to one version, the guards in the first minutes afterthe fire were not aware of the outbreak, and were trying not to letthe visitors leave the establishment without paying.
According to de Melo, the club was equipped with only one exit,and fire and rescue workers had to punch holes in the walls to getinto the club. In addition, the permit's term of the club expiredlast year.
It also reportedthat Brazilian President Dilma Rousseff cut short her visit toChile due to the fire, where she took part in the summit of theEuropean Union and the Community of Latin America and theCaribbean, reports Agence France-Presse.
Representatives ofthe authorities believe that the fire happened due to grossviolation of fire safety rules. During the party, pyrotechnics wasused on stage. It ignited the insulation and the room becameshrouded in acrid smoke.
The police fearthat the number of victims of a fire in Brazil could rise byseveral fold because investigators have just started to count thedead. Around 200 people are in hospital, the state of 8 beingcritical.