Lille and Monaco kept up the heat on Ligue 1 leaders Paris St Germain, but Sunday's action was overshadowed by crowd trouble at Nice's home clash with St Etienne.
Ligue de Football Professionnel president Frederic Thiriez threatened to impose "systematic bans" on supporters after violence flared at the Allianz Riviera stadium.
According to L'Equipe, around 250 visiting St Etienne fans were ejected from the stadium after some of their number began throwing seats at home supporters around an hour prior to kick-off.
Additional reports indicate the disturbance lasted around 10 minutes, during which time nine people were injured.
In a statement on the official LFP website, Thiriez expressed exasperation with the violence.
"Enough! The few cretins who claim to be supporters do not even realise they ruin the image of football," the statement read.
"I will ask a meeting with the ministry of Interior to discuss the supporters' trips to away games.
"If we don't succeed in resolving this problem it will end with a systematic ban on [supporters'] trips, which nobody wishes."
Nice president Jean-Pierre Rivere and his St Etienne counterpart Roland Romeyer both condemned the unrest.
The violent scenes were just the prelude to a miserable afternoon for Nice, with Claude Puel's men going down to a 1-0 defeat, their fourth consecutive Ligue 1 loss, courtesy of Mevlut Erding's first league goal for St Etienne.
Elsewhere, second-placed Lille remained on the heels of PSG thanks to victory over 10-man Toulouse.
Pape Souare's second-half header was all that separated the two sides after Oscar Trejo was sent off for a bad challenge after 60 minutes.
The win left Rene Girard's side four points behind PSG, while Monaco are just a point further back after a 1-0 victory at Nantes.
Mounir Obbadi scored the winner in the 70th minute.