Chaos erupts as angry fans storm the pitch following the Saint-Étienne's relegation to Ligue 2

    A Saint-Étienne fan throws a projectile on the pitch at the Geoffroy Guichard Stadium after the club's relegation to Ligue 2.

    (CNN)Sunday's relegation playoff between Saint-Étienne's and AJ Auxerre was marred by violence, just one day after crowd and police confrontations affected the Champions League Final.

    St Étienne and Auxerre played the second leg of their relegation playoff at the former's home stadium, the Stade Geoffroy-Guichard. The match decided which one of the teams will play in the country's top flight -- Ligue 1 -- next season, with the visitors Auxerre emerging victorious on penalties.
    Multiple videos circulated on social media showing St Étienne fans charging the pitch and setting off flares at the end of the match.
      French broadcaster RMC Sport reported that this forced players from both teams to be evacuated down the tunnel amid concerns for their safety.
        "Despite an exceptional and reinforced system of close to 500 agents, many supporters invaded the pitch at the final whistle of the match against AJ Auxerre," St Étienne said in a statement.
        "Some were then guilty of several degradations and acts of violence towards the players of the game, security agents, the police and the Tribune Pierre-Faurand.
        "The ASSE [St Étienne] strongly condemns these actions and gives its full support to those affected and will initiate the necessary legal proceedings."
          Saint-Étienne fans invade the pitch after being defeated at the end of the French relegation playoff second leg between AS St Étienne and AJ Auxerre at the Geoffroy Guichard Stadium.
          In total, 14 police officers, 17 fans and two Auxerre players suffered light injuries in the post-match incident, according to a press release from state service Préfète de la Loire. Police were able to safely escort the players and the 1,154 Auxerre fans away from the stadium.
          Initially, St Étienne released a statement only about the loss.
          "For the Association Sportive de Saint-Étienne, the 2021-2022 season ends with the painful sanction of relegation to Ligue 2, after eighteen consecutive seasons in Ligue 1.