How the Fire May Have Spread So Quickly
Several witnesses mentioned seeing waitresses carrying champagne bottles fitted with sparklers shortly before the fire erupted.
Others told French broadcaster BFMTV that a bartender lifted a colleague onto his shoulders as she held a lit candle in a bottle.
According to these accounts, flames spread rapidly along the wooden ceiling.
Officials believe the blaze may have triggered the release of combustible gases, leading to a violent ignition known as a flashover or backdraft.
These events can cause fires to intensify suddenly, leaving little time for escape.
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