Poland will deport 63 foreign nationals accused of causing violence and disruptions during a rap concert in Warsaw, Prime Minister Donald Tusk has announced.

Speaking on Tuesday, Tusk said the group, comprising 57 Ukrainians and six Belarusians, was responsible for “disturbances, aggressive behaviour and certain provocations” during Saturday’s performance by Belarusian rapper Max Korzh at the national stadium.

He said they “will have to leave the country voluntarily or by force,” stressing that the law must be obeyed regardless of nationality.

Tusk warned that Poland would not tolerate actions that could incite hostility toward Ukrainians, saying, “A conflict between Poland and Ukraine would certainly be a gift for (Russian President Vladimir) Putin.” Poland has been a key ally of Kyiv since Russia’s invasion in 2022.

Footage posted online showed sections of the crowd storming the stage area during the concert, which drew an estimated 70,000 people.

Police said 109 people were detained for various offences, including drug possession, assaulting security personnel, carrying pyrotechnics, and trespassing during a mass event.

Social media images also appeared to show a concert-goer waving the flag of the Ukrainian Insurgent Army (UPA), a guerilla group that collaborated with Nazi Germany, a symbol banned under Polish law.

“We saw that various flags and symbols were displayed there,” police spokesman Robert Szumiata told TVN24. “We collected all this evidence and sent it to the prosecutor’s office.”