Paris Saint-Germain forward Kylian Mbappe clashed with Nice striker Terem Moffi during their 3-2 defeat on Friday night.
Mbappe scored twice, but it was not enough as the Ligue 1 champions fell to their first defeat of the campaign.
Moffi proved to be the match-winner for Nice as he bagged their first and third goals at the Parc des Princes.
As the Super Eagles striker celebrated his goal to make it 3-1, Mbappe appeared to lose his cool and was seen exchanging words with Moffi.
Referee Clement Turpin stepped in to intervene and ease tensions as the game continued, and Mbappe eventually scored an acrobatic consolation effort.