As well as Neymar's claim of racist abuse, five players were sent off following a mass brawl deep in stoppage time including the Brazil worldwide, Layvin Kurzawa and Leandro Paredes from PSG and Marseille duo Jordan Amavi and Dario Benedetto.
A league statement added that defender Alvaro Gonzalo was being investigated after Neymar accused the Spaniard of using racist language towards him during the match, in which a total of five players were sent off following a mass brawl in stoppage time.
PSG, missing world record signing Neymar and France striker Kylian Mbappe, had defender Abdou Diallo sent off for a second booking in the second half.
Neymar had justified lashing out at Gonzalo by saying the Spaniard had racially abused him.
The committee also will review TV footage to further investigate the incident.
The goal will be to establish "what was actually said and what was actually heard", Deneux added, while insisting the commission would only rule on "objective, tangible elements".
Meanwhile, the Parisians picked their first win of the new season following a 1-0 win over Metz on Wednesday night.
PSG defender Layvin Kurzawa was given a six-match ban, the heaviest sanction of all, for his role in the confrontation at the end of the match between the two rivals, while Marseille defender Jordan Amavi was banned for three matches.
A couple months later he lashed out at a Rennes supporter following PSG's defeat on penalties in the French Cup final, earning himself a three-match ban from the French FA.
He will be free to return to face Reims on September 27 but will miss Sunday's trip to Nice.