[CLSTR]
< Back to situation

[REVISION HISTORY]

Extremism and terrorism investigations in Poland

Updated 2 times since CLSTR started tracking revisions of this situation.

What changed

2026-09-19 07:47 UTC → 2026-09-22 10:35 UTC · added removed

Polish security services have taken legal action against individuals involved in extremist activities and terrorist planning. In one case, a 20-year-old man was indicted in the Koszalin District Court for allegedly planning a mass terrorist attack using explosives to further the goals of ISIS. The National Prosecutor’s Office stated the suspect sought instructions for manufacturing explosive devices and attempted to recruit others for a terrorist organization. In a separate development, the Internal Security Agency (ABW) detained two 16-year-old males males, Kacper K. and Wiktor Ś., for involvement in neo-Nazi propaganda, racism, and antisemitism. Authorities discovered materials related to mass killings and ‘lone wolf’ shooters on electronic devices, and seized items featuring Third Reich symbolism. Specifically, Kacper K. was apprehended in Sosnowiec on September 13 after investigators found him to be an active participant in extremist groups on platforms such as Telegram and Discord. A second teenager, Wiktor Ś., was detained in Będzin on September 16; authorities determined he was part of the same online circles and had attempted to sell items featuring Third Reich symbolism to Kacper K. Following court decisions, Kacper K. has been placed in a juvenile shelter for three months, while Wiktor Ś. has been was sent to a police juvenile detention center. The On September 22, the ABW is continuing its investigation arrested 17-year-old Paweł G. from Siemianowice Śląskie for allegedly preparing a mass terrorist attack targeting a school and a mosque. He faces charges including participation in an organized criminal group intended to map out commit terrorist acts, the full network propagation of contacts Nazi and determine if other individuals fascist ideologies, and preparations for mass murder. Investigators found weapons, explosives, and knives at his residence, alongside items containing Nazi and SS symbolism. Evidence suggests the suspect studied the methods of previous mass killers, such as Anders Breivik, to avoid tactical errors. He is linked to extremist groups on Telegram and Discord, including ‘Atomwaffen Polska’ and ‘Bierut Soldier ZNB’. A court has ordered his three-month detention. The ABW is investigating whether external actors or foreign services influenced the radicalization process. process and is examining connections between Paweł G. and the two previously detained 16-year-olds.

Versions

  1. 2026-09-22 10:35 UTC Extremism and terrorism investigations in Poland
  2. 2026-09-19 07:47 UTC Extremism and terrorism investigations in Poland
  3. 2026-09-18 09:59 UTC Extremism and terrorism investigations in Poland

Only revisions since CLSTR began indexing content versions appear here. Select a version to see what changed compared to the one before it.