Investigators probing the fire at Birch by Romeo Lane in North Goa’s Arpora, where 25 people were killed earlier this month, are yet to “conclusively” establish the cause of the blaze, The Indian Express has learnt. While “fireworks activity” near the stage in the deck area remains the most plausible theory, “conflicting” opinions have appeared during the probe, including the possibility of a short circuit in electrical systems above the main stage, it is learnt. According to investigators probing the lapses and circumstances that led to the fire, only a forensic report, which is awaited, shall conclusively establish how it started. An investigator, requesting anonymity, said a belly dancer and her troupe, who were performing on the stage at the time, were summoned during the probe. “In their testimonies, the band performers, who used the fireworks, claimed that the electrical fireworks involved ‘cold’ pyro machines, which do not cause a fire. They used four such spark machines. They showed videos, claiming that similar fireworks were used in earlier performances at the club and other locations.” …