Russia fans knew to be on their best behaviour in and around the stadium after UEFA handed them a suspended disqualification from Euro 2016.
A section of their supporters stormed through stewards in the aftermath of their opening game against England on Saturday and television pictures showed Russians showing no mercy against opposing fans trying to escape.
The trouble followed a series of violent encounters in Marseille's city centre, which has since been followed by more trouble in Lille, where they played their second game against Slovakia on Wednesday.
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UEFA said that a repeat of fan disturbances will lead to automatic disqualification from the competition and it appears that may have just happened.
Russia were trailing Slovakia 2-0 when Denis Glushakov finished off an excellent move to give them hope of a comeback. One fan responded by lighting a flare in the Russian end. Of course, flares constitute a banned substance at football matches and represent significant dangers to those around them.
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The Internet is now wondering whether Russia have broken the terms of their probation and some seem to think they will be eliminated before their final group game against Wales on Monday.
Here is just some of the reaction:
It will now be up to UEFA to decide whether a flare being lit constitutes the 'fan disturbance' that they warned would activate their expulsion. It is, of course, nothing like what we saw on Saturday in which a number of hooligans appeared to execute an organised attack on England fans, signalled by a firework.
Indeed, much of the reaction to the flare may be from those with an English or Welsh allegiance who hope to seal an easy passage into the next round by having the Russians eliminated.
What is more likely is a small fine for the Russian Football Union as well as a reprimand for security around the stadium, who should have found and confiscated the flare.
Anyway, it looks as though Russia are facing elimination anyway after garnering just one point from their first two games.
A win against Wales would give them a good shot of qualifying but after showing little against both England and Slovakia, they are certainly not favourites against Chris Coleman's men.
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