Three convulsive attacks astatine Polish schools this week were driven by the "glorification of violence" online, Prime Minister Donald Tusk said.
The attacks person near 1 pistillate dormant and others injured, including children.
"These are precise often spontaneous actions inspired by online activity," Tusk said connected Sunday, during a situation gathering with information services.
Police person arrested 117 radical crossed the state for possession knives oregon different weapons, oregon for threatening to onslaught schools oregon chap students, aft searching tens of thousands of schools.
A pistillate was arrested connected Saturday aft injuring 3 radical portion attacking a 17-year-old miss astatine an acquisition instauration successful the capital, Warsaw.
It came a time aft thousands of constabulary visited schools crossed Poland, pursuing 2 stabbing attacks earlier successful the week, 1 of which led to the sidesplitting of a pistillate caretaker.
"We are not dealing with immoderate radical organized connected a large scale," Tusk said connected Sunday.
"In the past years and months, we person noted - globally and successful Poland - a emergence successful the fascination with violence," helium added.
The premier curate said the attacks were acts "nihilistic violence" associated with the utmost right.
"Some of the radical detained are progressive successful the ultraright environment," helium said, adding that constabulary had noticed a emergence successful online searches of Nazi contented arsenic good arsenic of "mass killers who person go idols online".
On Wednesday, a 19-year-old pupil attacked and injured 9 radical astatine a vocational schoolhouse successful the cardinal Polish state of Mazovian.
A time later, the 37-year-old caretaker was killed aft a 15-year-old entered a superior schoolhouse successful Leszczydół-Nowiny, northbound of Warsaw.
Interior Minister Marcin Kierwiński besides said a 17-year-old was detained successful the municipality of Sierpc, north-west of Warsaw, aft allegedly stating "on schoolhouse grounds that helium planned to bash something... unsafe - that helium intended to harm someone".
Thousands of Polish police officers visited schools nationwide to effort to reassure pupils aft the stabbings sparked rumours of a "Bloody Friday" of much attacks stemming from a expected online challenge.
Meanwhile, Polish information services convened a peculiar gathering connected Sunday aft receiving accusation astir a imaginable onslaught connected Tusk and Defence Minister Wladyslaw Kosiniak-Kamysz, a spokesperson said.
A peculiar services spokesperson said officials were treating the menace arsenic "deadly serious".
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