Parisian authorities are trying to stop a mass cocktail party organised over the internet and planned for the Eiffel Tower grounds, after a reveller died in an earlier gathering.
The man who died on Thursday at a party in Nantes attended by 10,000 people was drunk when he plunged over a parapet.
The death was the first recorded as a result of giant outdoor drinking parties, organised over online social network Facebook, whose popularity has exploded across France in the past six months.
The Parisian party is due for 23 May, with 15,000 people subscribed to a Facebook group for it.
The event was pulled from the website after police warned the organiser of the consequences of holding the party.
The maximum penalty for organising illegal events in France is six months in prison and a fine of 7,500 euros.
However partygoers have not been deterred. A new group was up and running on Friday afternoon with more than 3,800 already people signed up.