At least 111 people were killed and 134 injured, most of them seriously, when an explosion caused by fireworks set ablaze a packed nightclub in the Russian city of Perm. The blast hit the Lame Horse nightclub as over 220 people, mostly its employees and their families, were partying inside to celebrate its eighth anniversary, ITAR-TASS reported quoting local police. Senior judicial official Vladimir Markin said, the accident was due to a violation of instructions when launching fireworks. The majority of the deaths were the result of burns or gas inhalation, besides there was a crush at the exit as panicked crowd scrambled hard to escape. Markin ruled out the possibility that the accident was caused by a terrorist act. Perm, a city of around one million people, is about 1,200 kilometres east of Moscow in the Ural Mountains.