// BBC WORLD NEWS — MONDO
Poland stabbings driven by online glorification of violence, Tusk says
A 37-year-old caretaker was killed at a primary school in a town north of Warsaw this week
Three violent attacks at Polish schools this week were driven by the "glorification of violence" online, Prime Minister Donald Tusk said.
The attacks have left one woman dead and others injured, including children.
"These are very often spontaneous actions inspired by online activity," Tusk said on Sunday, during a crisis meeting with security services.
Police have arrested 117 people across the country for possession knives or other weapons, or for threatening to attack schools or fellow students, after searching tens of thousands of schools.
A woman was arrested on Saturday after injuring three people while attacking a 17-year-old girl at an educational institution in the capital, Warsaw.
It came a day after thousands of police visited schools across Poland, following two stabbing attacks earlier in the week, one of which led to the killing of a female caretaker.
"We are not dealing with any group organized on a big scale," Tusk said on Sunday.
"In the past years and months, we have noted - globally and in Poland - a rise in the fascination with violence," he added.
The prime minister said the attacks were acts "nihilistic violence" associated with the extreme right.