Zaryn said the detentions were carried out on October 10 and "were an effect of earlier gathered information on an extremist group whose aim was to intimidate Muslims living in Poland."
Zaryn added that in addition to harassment and persecution, the group also planned "more radical actions with use of firearms and explosives."
He added that the group's plans were modelled on terrorist attacks carried out, among others, by Anders Breivik in Norway in 2011, Brenton Tarrant in New Zealand this year and Philip Manhaus in Norway in 2019.
ABW officers searching through a house in Warsaw found "substances and chemicals necessary for the production of large amounts of explosives as well as firearms, structural elements used for making weapons and ammunition," said Zaryn.
The search also revealed eight vials of highly toxic chemicals, more than 170 books on the production of explosives, as well as electronic data carriers that could be used to maintain encrypted communication between group members.
Those detained were charged, among others, with preparing large-scale life-threatening attacks and publicly calling for the killing of members of ethnic and religious minorities, illegal possession of explosive precursors, firearms and ammunition and drug trafficking within the EU.
Under a court order, both persons were arrested after hearing charges. (PAP)