Footage released by Canal+ shows Bastia coach Francois Ciccolini asking Nice striker Mario Balotelli after Friday's game: "Do you think I'm scared of you?"
On Sunday, the network tweeted footage of Ciccolini and Balotelli walking down the players' tunnel after the 1-1 draw at the Stade Furiani.
Quand le ton monte entre François #Ciccolini et Mario #Balotelli avant de retourner au vestiaire... #CFC pic.twitter.com/GgRrsjd05r
- Canal Football Club (@CanalFootClub) January 22, 2017
The Italy international appears to say something to Ciccolini as he walks by him, to which the Bastia boss clearly replies in French: "Do you think I'm scared of you or what?"
The coach is then heard saying in Italian: "Go f--- yourself!"
As Ciccolini departed for the Bastia dressing room, he yelled in French: "Where do you think you are?"
Balotelli had earlier used his Instagram account to complain that he was subjected to monkey chants during the match in Corsica.
A photo posted by Mario Balotelli�������� (@mb459) on
Balotelli's teammate Alassane Plea told Telefoot after the game: "Yes, I can confirm it. We heard it during the warmup [and] during the game as well, monkey chants.
"At the end of the game he [Balotelli] was very, very upset. They insulted him the whole game. It's dreadful to hear these things on a football pitch."
In a brief statement on Saturday afternoon, the French Football League (LFP) said it "deplored all of the incidents" that happened on Friday. Before the match, Nice's team bus had been pelted by stones as it arrived at the stadium.
The LFP's disciplinary committee will start looking into the matters when it convenes on Thursday and once it has received further information from officials and both clubs.
Although Bastia said on Saturday they were not aware of any abuse taking place, they stressed they were at the LFP's disposal "so that all light is shed" on "this type of behaviour, which is by nature stupid and unacceptable."
Information from The Associated Press was used in this report.