Israeli soccer fans were attacked in a “serious incident of violence in Amsterdam” overnight into Friday, authorities said, with the Israeli government saying it was sending planes to evacuate affected citizens, writes CNN.

Hundreds of fans of Israel’s Maccabi Tel Aviv soccer team “were ambushed and attacked in Amsterdam” on Thursday night as they left the stadium following a Europa League game against Dutch side Ajax, the Israeli embassy to the United States said on social media platform X.

Social media video shared by the embassy showed what it said was violence against Maccabi fans. CNN has not yet been able to verify those videos.

Dutch Prime Minister Dick Schoof said he was in touch with Israeli Prime Minister Benjamin Netanyahu regarding the “completely unacceptable anti-Semitic attacks on Israelis”. Schoof said he had a call with Netanyahu and emphasized that the perpetrators will be tracked down and prosecuted, adding “it is now quiet in the capital”. Netanyahu emphasized in a call with Schoof “the supreme importance” of the Dutch government ensuring the safety of all Israelis in the Netherlands, the Israeli Prime Minister’s Office said.

“Netanyahu stated that he views the planned anti-Semitic attack against Israeli citizens as serious,” the Prime Minister’s Office said, adding that he asked for increased security for the Jewish community in the Netherlands.

Political tensions had been rising in the lead up to Thursday night’s match with multiple unconfirmed social media videos showing Maccabi fans chanting slogans about the conflict in the Middle East. CNN has not yet been able to verify these videos.

Local police said 57 people had been held after the game as pro-Palestine demonstrators had tried to reach the Johan Cruyff stadium, even though the city had forbidden them to protest there, Reuters reported. Police said fans had left the stadium without incident, but during the night various clashes in the city center were reported.

CNN has reached out to Amsterdam police for an updated comment on the latest recent reported violence.

Israeli Foreign Minister Gideon Sa’ar said 10 citizens were injured, and advised Israelis in Amsterdam to stay in their hotels: “The impression from the reports (are) that the situation is calming down in the last hour”. He condemned the attacks as “barbaric and antisemitic” and called them “a blaring alarm call for Europe and the world”. Sa’ar also asked his Dutch counterpart Caspar Veldkamp to help getting Israelis from their hotels to the airport.