Article R721-2 of the French Code governing the entry and residence of foreign nationals and the right of asylum
The departmental prefect and, in Paris, the police prefect are competent to determine the country of return of a foreign national in the event of the automatic enforcement of the following decisions: 1° A decision imposing an obligation to leave French territory; or 2° A ban on returning to French territory;> and 3° The implementation of a decision taken by another State; 4° A ban on movement on French territory;…