I for one am relieved casualties were minimal. But I don't think the OP wanted to have more casualties. It just doesn't add up. It happened 3:30 in the morning when, I would think, all residents in the 8-storey building are still sleeping. The statements: "thunderous blast was heard when fire erupted" and "the windows of 21 neighbouring buildings and 45 vehicles smashed" means it wasn't just a minor explosion.