PSG owners Canal+ responded in 1991 by encouraging and financing non-violent fans of the KoB stand to take place in the Auteuil stand at the other end of the Parc des Princes. The Virage Auteuil was born, alongside Supras Auteuil, its most notorious ultras. At first the measure worked but, slowly, a violent rivalry arose between the two stands. Things came to a head in 2010 before a match against Olympique de Marseille in Paris. Boulogne fan Yann Lorence was killed following a fight between groups from both stands outside the Parc des Princes, forcing PSG president Robin Leproux to take action.