Police detained dozens of people Sunday for taking part in a demonstration in central Amsterdam that had been outlawed following violence targeting fans of an Israeli soccer club, local media reported.

Amsterdam’s mayor, Femke Halsema, banned all demonstrations over the weekend in the aftermath of the grim scenes of migrant youths on scooters and on foot attacking Maccabi Tel Aviv supporters on Thursday and Friday in what was widely condemned as a violent outburst of antisemitism in the Dutch capital.

Late Sunday afternoon, the municipality, together with Amsterdam police and the public prosecutor’s office, extended the ban on demonstrations until Thursday morning.

Israel’s ambassador to the Netherlands said that 2,000 Israelis were brought home on special flights from Amsterdam over the past few days.

An Amsterdam newspaper, Het Parool, reported that about 100 people were detained, and media said they were taken away in buses. Police confirmed they were detaining demonstrators, but didn’t give numbers.

The protesters yelled slogans including “Free, free Palestine.”

The Amsterdam Municipality said on X that police had begun arresting demonstrators who refused to leave the square, which is in the heart of the city’s downtown shopping area and close to the historic canal network.

Organizers of the protest went to court on Sunday morning seeking an injunction to allow the demonstration, but a judge upheld the ban imposed by the municipality.

At the hearing, senior Amsterdam police officer Olivier Dutilh said that there were again incidents overnight targeting people thought to be Jewish, including some being ordered out of taxis and others being asked to produce their passports to confirm their nationality.

Police launched a large-scale investigation Friday after gangs of youths conducted what Amsterdam’s mayor called “hit and run” attacks on fans that were apparently inspired by calls on social media to target Jewish people. Five people were treated at hospitals and more than 60 suspects were arrested.

It has since been reported that one of the agitators involved in orchestrating the attacks was a former teacher with the United Nations Relief Works Agency, Ayman Nejmeh, who immigrated to the Netherlands from Syria in 2018. 

Mr. Nejmeh, as the head of the Palestinian Community in the Netherlands, oversees the organization’s 700-person Whatsapp group, which was a central platform for Thursday’s coordinated attack. Mr. Nejmeh’s personal Facebook profile previously listed his Unrwa affiliation, but it was removed at some point over the past few days.

Israeli Foreign Minister Gideon Saar rushed to the Netherlands on Friday and offered Israel’s help in the police investigation. He met on Saturday with Dutch Prime Minister Dick Schoof and said in a statement that the attacks and demands to show passports “were reminiscent of dark periods in history.”

In France, Paris police said Sunday that 4,000 officers and 1,600 stadium staff will be deployed for a France-Israel soccer match on Thursday to ensure security in and around the stadium and on public transportation.

France and Israel are playing in a UEFA Nations League match on Thursday that French President Emmanuel Macron will attend, the Elysee presidential palace said.

“There’s a context, tensions that make that match a high-risk event for us,” Paris police chief Laurent Nuñez said on French news broadcaster BFM TV, adding authorities “won’t tolerate” any violence.

Mr. Nuñez said that 2,500 police officers would be deployed around the Stade de France stadium, north of the French capital, in addition to 1,500 others in Paris and on public transportation.