Polish school custodian killed in knife attack near Wyszków after Ostrołęka stabbing

Attack at Leszczydół-Nowiny

At approximately 9:00 a.m. on 8 October 2026, a 15-year-old former pupil entered an elementary school in the village of Leszczydół-Nowiny, near Wyszków in Mazovia, armed with a knife. The teenager attacked three staff members: a 37-year-old female custodian, a teacher, and the school principal. Despite resuscitation efforts at the scene, the 37-year-old woman died from her injuries. The deceased staff member was a mother of two children. The school principal and a teacher intervened to subdue and apprehend the attacker before police arrived minutes after the alarm was raised. Both the principal and the teacher sustained wounds that authorities described as non-life-threatening. Police took the 15-year-old suspect into custody at the scene, noting that he was wearing a helmet equipped with a camera during the assault.

Previous incidents in Ostrołęka and Sierpc

The fatal incident followed two separate school security incidents on Wednesday, 7 October 2026. In Ostrołęka, located northeast of Warsaw, a 19-year-old student identified as Jakub Z. carried out a knife attack at Vocational School Complex No. 4. Casualty reports from the Ostrołęka attack varied across authorities, with regional prosecutors recording nine injured people (five pupils, two teachers, and two bystanders), while separate police accounts reported between seven and ten wounded, including the suspect himself who suffered self-inflicted injuries. The attacker also brought a homemade explosive device inside a backpack; after smoke emerged from the bag in a classroom, pupils threw it out of a window. Police detained the 19-year-old roughly 30 minutes after the assault, between 400 and 500 metres from the building, prompting an attempted murder investigation by the District Prosecutor's Office. On the same day in Sierpc, north-central Poland, police detained a 17-year-old student who was planning an attack, finding two knives inside his backpack.

Investigation into online challenges

Polish law enforcement initiated inquiries into whether the sequence of school assaults was connected to social media trends or online challenges. Officers from the Central Bureau for Combating Cybercrime deployed to investigate potential digital links, following reports that the attacker near Wyszków recorded the event. Sub-inspector Katarzyna Kucharska of the Mazovia police confirmed the deployment of specialized cybercrime personnel:

We have such information, which is why officers from the Central Bureau for Combating Cybercrime have already arrived on site. Because all this plays out online, officers combating cybercrime are indispensable and key here. They are already on site, they are working.

Police pointed to prior trends circulating among teenagers, such as staged disappearance challenges, while investigators examine whether internet forums coordinated or encouraged physical violence at the schools.

Government response and legislative dispute

Following the attacks, Prime Minister Donald Tusk convened an emergency cabinet meeting at 1:00 p.m. in Warsaw, bringing together the ministers of the interior, digital affairs, education, and health, alongside the special services coordinator and the police commander-in-chief. Tusk praised the staff members who confronted the attacker in Leszczydół-Nowiny and directed state assistance to the family of the deceased custodian. Addressing the ministers, Tusk focused on the broader pattern of school violence:

The task for the government, for me personally and for the ministers, is to do everything in the power of the state to stop, or at least limit, the risks stemming from the wave of violence.

The prime minister also addressed a legislative dispute regarding digital safety, pointing to President Karol Nawrocki's veto on 9 January 2026 of a bill implementing the European Union Digital Services Act. Tusk stated that the veto restricted the state's authority to quickly block violent online material without prior court orders, pledging that parliament would vote on the legislation again.