The move comes after fans of the Serbian club paid tribute to Ratko Mladic, a former Bosnian Serb general convicted of genocide, crimes against humanity, and war crimes, who died on Thursday. The fans displayed a banner with the words "General, eternal glory and thank you" during the team's Europa League match against Viktoria Plzen, which they lost 5-4 on aggregate. The UEFA has confirmed that it has opened a disciplinary procedure against Étoile Rouge de Belgrade for three charges: a racist and/or discriminatory behavior, the diffusion of an inappropriate message in the context of a sports event, and an inappropriate conduct of the team.