"A helicopter was seen airlifting injured people following a deadly bar blaze on New Year's Eve at a Swiss ski resort - as concerns mounted about the numbers killed and the cause of the blaze following a confused press briefing from police and local authorities. Footage shows the helicopter flying near Zurich University Hospital. The latest information from the Swiss authorities suggested the 'majority' of the 100 reported hurt was 'seriously injured' - while numbers of dead varied from 'several' to 'several dozen' and 'tens' during the media briefing. The cause of the blaze also remained a mystery - with officials describing it as a 'fire, not an attack'. They did rule out an 'explosive device' following reports of a blast, but only after telling reporters there wasn't an explosion, then admitting there was a 'small' one, but which they said was due to the fire taking hold. They refused to be drawn on whether pyrotechnics were at play - after online videos showed sparklers served in drinks at the bar previously - and said there was 'no information' about whether the bar complied with safety standards. They did admit that it was 'likely' that victims were of 'different nationalities'."