Opposition politicians have accused Fonds Marianne, a government fund set up to combat what the French government calls Islamic "separatism", of creating videos slandering politicians.
A director famed for films such as "Subway", "The Big Blue" and "Nikita", Besson's fate will be decided by an investigating judge in charge of the case.
Documents seen by Mediapart reveal that some students at the school where France's future judges and prosecutors are trained used racist language on a private online document. The comments made by the students, who are poised to graduate from the École Nationale de la Magistrature and start their careers, include “France for the French” and “Arabs Out”. The college's authorities informed prosecutors in Bordeaux who have now opened a criminal investigation. David Perrotin reports.