The Netherlands’ contestant in the Eurovision Song Contest was dramatically expelled from competition hours before Saturday’s final over a backstage incident that is being investigated by police, according to AP.

Organizer of the European Broadcasting Union said Swedish police were investigating “a complaint made by a female member of the production crew” and it would not be appropriate for Klein to participate while the legal process was underway.

Klein had failed to perform at two dress rehearsals on Friday, and the contest organizer said it was investigating an “incident.”

Though rumors had been flying the incident was connected to Israel’s delegation, organizers said the incident “did not involve any other performer or delegation member.”

“We deeply regret this and will come back to this later,” AVROTOS said in a statement.

Though the contest’s motto is “united by music,” this year’s event has proven exceptionally divisive.

Dutch broadcaster AVROTOS, one of dozens of public broadcasters that collectively fund and broadcast the contest, said it “finds the disqualification disproportionate and is shocked by the decision.”

Several miles (kilometers) from central Malmo at the Malmo Arena, 25 acts — narrowed from 37 entrants by two semi-final runoffs — are due to perform three-minute songs in front of a live audience of thousands and an estimated 180 million viewers around the world.

This year’s entries range from emotional to eccentric. They include the goofy 1990s nostalgia of Finland’s Windows95man, who emerges from a giant onstage egg wearing very little clothing. Ireland’s Bambie Thug has summoned witchy spirits onstage and brought a scream coach to Malmo, while Spain’s Nebulossa boldly reclaims a term used as a slur on women in “Zorra.”

The favorites include Swiss singer Nemo — who would be the first nonbinary Eurovision winner if their operatic song “The Code” tops the voting — and Croatia’s Baby Lasagna. His song “Rim Tim Tagi Dim” is a rollicking rock number that tackles the issue of young Croatians leaving the country in search of a better life.

Dean Vuletic, an expert on the history of the contest, said that despite the contest’s reputation for disposable bubblegum pop, Eurovision often tackles “political and social issues such as feminism, European integration, gender identity.”