Swiss police have said “several dozens of people” are presumed dead and about 100 are injured, most of them seriously, following a fire at a bar in an Alpine resort during a new year celebration.The incident occurred at around 1.30am local time on Thursday in Le Constellation bar in Crans-Montana, 25 miles north of the Matterhorn.Police said they cannot yet be more precise about fatalities as investigations continue at the scene and attempts are made to identify the victims and inform their families.