A blaze at a packed bar in the Swiss Alps during New Year's Eve celebrations killed about 40 people and injured 115 others, many of them seriously.

The managers of the Swiss ski resort bar where dozens died during a fire at a New Year's celebration are under investigation for negligent manslaughter, authorities said Saturday.

This means all 40 victims of the blaze, which broke out at the Constellation bar early on January 1, have now been identified, Swiss police said.