Bastia have issued a stadium ban to a supporter in relation to alleged racist abuse towards Nice striker Mario Balotelli in Friday's 1-1 draw between the teams at the Stade Armand Cesari.
Balotelli claimed after the game that a section of the home supporters targeted him with "monkey noises" and called the experience "horrible".
The French Professional Football League has since said it will investigate the incidents.
Nice praised the squad and Balotelli in particular for not responding to "provocations" from the terraces after their team bus was stoned pre-match.
The club have now confirmed that a supporter has been prohibited from entering the stadium or attending any other French league game.