A French league match between Nice and Marseille was suspended on Sunday after home fans threw projectiles and invaded the field.
With about 15 minutes remaining, Marseille midfielder Dimitri Payet was hit on the back by a bottle from the stands.
Supporters had earlier been warned against throwing objects by the stadium announcer.
Payet threw the bottle back into the crowd, prompting a significant number of Nice fans to rush the field, and a melee ensued involving players and supporters.
The referee halted the match, with Nice winning 1-0 at the time, and sent the players to the changing rooms.
Play was held up for over an hour before Nice president Jean-Pierre Rivere appealed to the club’s supporters over the sound system for calm and the home players returned to the pitch to warm up.
But Marseille refused to join them, with French daily L’Equipe reporting that visiting players Matteo Guendouzi and Luan Peres were injured in the fighting.
Swedish striker Kasper Dolberg had put Nice ahead in the 49th minute.