Croatian leaders and Israel’s embassy condemned antisemitic and pro-Nazi chants by supporters of Hajduk Split ahead of the Croatian club’s UEFA Conference League match against Dutch team Ajax on Thursday in Split, Croatia.

Groups of Hajduk supporters known as Torcida marched toward the stadium, chanting “Crush the Jews,” “Rise up, Adolf,” and “Let’s go Ustasha,” according to local media reports and footage shared on social media. Other footage captured chants referencing Auschwitz. A car carrying a coffin marked with Ajax’s name also led the procession.

Croatian President Zoran Milanović called the chants “unacceptable and shameful” and urged swift action against those responsible, saying there was no place in Croatia for the glorification of Nazism or Ustasha ideology. Prime Minister Andrej Plenković condemned the antisemitic messages, calling them incompatible with the values Croatia seeks to uphold. Israel’s embassy in Zagreb said it was “deeply shocked” by the incident.

Police opened an investigation into the chants. Dozens of fans had been detained ahead of the match over violence, and the Associated Press reported Friday that at least a dozen Hajduk supporters had been arrested following the incident. During the game, fans set off flares and other pyrotechnics, forcing a stoppage of about 12 minutes.

Hajduk Split won 2-1 and apologized to UEFA and Ajax, saying the visitors had witnessed scenes the club did not want Europe to remember. The Croatian Football Federation also condemned the incident.

The incident follows other cases involving pro-fascist imagery in Croatian soccer. In 2015, UEFA deducted a point from Croatia after a swastika was marked on the pitch in Split before a European Championship qualifying match against Italy. The perpetrators were never identified.

This article was independently written by the BJL Newsroom based on reporting from The Times of Israel, the Associated Press and Euronews.