The arrests and the closure of schools in the Mazowieckie region on Oct 9—due to fears of a day dubbed 'Bloody Friday'—follow two real attacks. A 19 year old man injured 10 people in Ostrołęka on Oct 7, and a 15 year old former student killed a 37 year old employee and wounded two others at a primary school in Leszczydół-Nowiny on Oct 8. Authorities also detained a 17 year old in Sierpc who, according to Interior Minister Marcin Kierwiński, had searched for instructions on how to execute a bloody attack.
Wednesday, October 21, 2026
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Poland Detains 15 Teens After Second School Attack in Two Days
World12 days ago
Law enforcement officers took several youths into custody after warnings of coordinated violence at educational institutions spread across social media. Police arrested 15 teenagers in the days following online threats of knife attacks, while Prime Minister Donald Tusk urged the public to remain calm and stop the dissemination of unverified claims to prevent further copycat incidents.
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