Poland removed Viktor Orban and other top Hungarian officials from the guest list for a gala event Friday to mark the handover of the rotating Presidency of the European Union from Budapest to Warsaw.

The reason is Budapest granting political asylum to former Polish Deputy Justice Minister Marcin Romanowski, who is investigated at home for suspected misuse of funds.

Poland withdrew an invitation for Hungary’s ambassador to a European Union-themed gala after Prime Minister Viktor Orban’s government granted asylum to a fugitive Polish opposition lawmaker.

Poland’s decision comes in response to Hungary granting political asylum to Marcin Romanowski, Poland’s former deputy justice minister, who was detained last July in an investigation into alleged misuse of public funds.