Three people were injured in a ⁠stabbing attack at ⁠a further education ⁠college in Warsaw on Saturday, police said, the latest in a series of incidents that have stoked concerns in Poland about copycat violence among young people.

On Friday, thousands of ‌police visited schools nationwide to try to reassure pupils after two stabbing sprees by teenagers in as many days sparked rumours of potential further attacks, fears that Saturday’s incident is likely to intensify.

“At 12.30pm today, we received a report ⁠of an incident involving the use of a dangerous weapon,” police spokesperson Jakub ‌Filipiak said.

“One person was injured and transported to the hospital with non-life-threatening injuries. Two other bystanders ‌also sustained injuries but did not require hospitalisation.”