UEFA has charged Russian club Zenit St. Petersburg with fan racism in a Europa League game.

Zenit fans have been accused of racist behavior and throwing objects during last week's game against Leipzig, which saw the Russian team eliminated 3-2 on aggregate.

The case will be heard on May 31, about two weeks before Russia hosts the World Cup.

UEFA hasn't provided any details of the incident. However, the anti-discrimination FARE Network has said there were chants mocking an injured black player.

It is Zenit's second racism case of the season. It was fined in December for fans displaying a giant banner honoring Bosnian Serb war criminal Ratko Mladic.