Participation in an undeclared rave-party in the countryside of Roybon, Isère, tripled between Friday and Sunday to reach some 1,500 people. The owner of the field, whose harvest was "devastated", filed a complaint yesterday with the gendarmerie.

The prefect announced that he had activated a crisis cell on site including firefighters, gendarmes and rescuers until the end of the rave- party, which according to the prefecture "could last until Monday"