The board of Nissan Motor Co. put off a decision to choose the successor to ousted Chairman Carlos Ghosn, who has been arrested for alleged financial misconduct, reflecting heightened tensions with its partner Renault SA.

Renault has urged Nissan to hold an extraordinary shareholders meeting to discuss the French automaker's representation in the Japanese firm. But Nissan has rejected the call, a source close to the matter said, while CEO Hiroto Saikawa emphasized the need for beefing up its governance before seeking investors' understanding.

Renault has retained Ghosn as its chairman and CEO. The French government, Renault's biggest shareholder, is backing Michelin CEO Jean-Dominique Senard to replace Ghosn permanently as Renault's chairman, Le Figaro newspaper reported.