Israeli Prime Minister Benjamin Netanyahu has directed that two rescue planes be sent immediately to Amsterdam following “a very violent incident” targeting Israeli fans of Maccabi Tel Aviv after a soccer game against Ajax.

Officials said friction had been growing in the lead-up to the soccer match, with the antisemites who led the attack calling for an organized “Jew hunt” in the city.

French police chief Laurent Nunez said 4,000 police officers and security staff will be deployed around the Stade de France, with another 1,500 police on public transport.