An explosive device detonated against the outer wall of the Cheider Orthodox Jewish school on Zeelandstraat in Amsterdam’s Buitenveldert district in the early hours of Saturday, causing limited structural damage and no injuries, as a previously little-known Shia Islamist organisation claimed responsibility for the attack and circulated footage appearing to show the blast — the second consecutive night of attacks on Jewish religious institutions in the Netherlands.
The Amsterdam “triangle” — the mayor, chief of police, and chief prosecutor, said in a joint statement that they considered the explosion a targeted attack against the Jewish community and were treating the matter with the utmost seriousness. Authorities said they were working closely with national security services and were in contact with representatives of the Jewish community.
Mayor Femke Halsema confirmed that CCTV footage showing the suspect placing and igniting the device was under examination. “This is a cowardly act of aggression towards the Jewish community,” Halsema said. “I understand the fear and anger of Jewish Amsterdammers. They are increasingly confronted with antisemitism, and that is unacceptable. Amsterdam must be a place where Jewish people can live safely.”
In an unverified online video, a previously little-known group identifying itself as Ashab Al Yamim claimed responsibility for the blast.
The group released footage appearing to show a small explosion followed by a fire outside the school. The Centre for Information and Documentation on Israel said the logo used in the Amsterdam footage matched imagery from the Rotterdam synagogue fire the previous night, which the same group had claimed. The symbol was identified as belonging to Harakat Ashab al-Yamin al-Islamiyyah, a Shia extremist movement that has not previously featured prominently in European security monitoring reports.
The Amsterdam attack followed an arson explosion at a synagogue in central Rotterdam in the early hours of Friday, the first of what have now become two consecutive nights of attacks on Dutch Jewish sites. Four suspects were arrested in Rotterdam on Friday: two 19-year-old men, an 18-year-old man, and a 17-year-old boy from the city of Tilburg. They were detained in a car near another synagogue. Police said it was not yet clear whether they were planning a second attack at the time of their arrest. Dutch Justice Minister David van Weel referenced both incidents in a post on X, writing: “Two nights in a row a cowardly attack with an explosive at a Jewish building. First in Rotterdam, now in Amsterdam.” He said greater damage in Amsterdam had been prevented because of existing security measures and what he described as the “alertness” of those responsible for the building’s protection.
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Prime Minister Rob Jetten condemned the Rotterdam attack as “deeply disturbing” before the Amsterdam incident occurred, saying it had created significant fear within the Jewish community, and said there should be “no place for antisemitism in the Netherlands.” Following the second attack, he described the Amsterdam explosion as “horrible.”
The escalation is part of a pattern that extends beyond the Netherlands’ borders. Security at Jewish schools and institutions in Amsterdam had been heightened earlier in the week following attacks on Jewish sites in Belgium and the Netherlands, including a synagogue in Liège.
Buitenveldert, where the Cheider school is located, is considered Amsterdam’s modern Jewish quarter, home to synagogues, religious schools, and Jewish-owned restaurants, a concentration of Jewish communal life that was already under permanent security arrangements that were intensified following the Belgian and Rotterdam incidents.
In the United States, a separate attack occurred when a man rammed a vehicle into a synagogue building in Michigan and opened fire, according to initial reports, adding to concerns across the Western world that Jewish institutions have become targets for violence in the context of the US-Israeli war on Iran. European security officials said they had assessed the regional risk to Jewish communities as elevated since the war began on February 28 and that the pattern of attacks in Belgium and the Netherlands was consistent with that assessment.
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The broader context in the Netherlands is one of persistent tension. Amsterdam was already subject to intensive international scrutiny over antisemitism following a violent incident in November 2024 in which Israeli football supporters were attacked by groups of men in the city centre after a match between Ajax and Maccabi Tel Aviv, an incident that Halsema and Dutch authorities were criticised for not preventing. The Cheider school, which serves Amsterdam’s Orthodox Jewish community at both primary and secondary level, has long had permanent security staffing, as have most Jewish educational institutions in the city.
The intensity of the current attacks, and their occurrence on consecutive nights with claimed affiliation by an organised Islamist group rather than individual perpetrators, marks a distinct escalation from the pattern of more diffuse antisemitic incidents previously documented in the Netherlands. The involvement of out-of-city suspects in the Rotterdam attack, the four arrested individuals were from Tilburg, more than 100 kilometres from Rotterdam, suggests a degree of organisation that authorities are examining carefully.
Dutch prosecutors confirmed that the four suspects arrested in Rotterdam remained in custody on Saturday and were undergoing questioning. No charges had been formally laid as of the time of publication, and the investigation was continuing. In Amsterdam, police said they were prioritising identification of the individual shown in CCTV footage and had not disclosed whether any suspect was in custody or known to law enforcement.
No formal link between the Amsterdam and Rotterdam attacks has been publicly confirmed by Dutch prosecutors, though the shared imagery connecting both incidents to Ashab Al Yamim is the subject of active forensic and intelligence analysis. National counterterrorism coordinator NCTV had not issued an updated public threat assessment as of Saturday morning.