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Police are also probing if packed Le Constellation breached fire safety rules.

The fire at Le Constellation bar in Crans-Montana, Switzerland, on New Year's Day killed 40 people and injured 116.
The massive fire that engulfed a bar at a Swiss ski resort in Crans-Montana killed dozens and injured more than 100. Officials believe sparklers ignited the deadly fire. CBS News' Ramy Inocencio reports.