Society

Poland shuts schools amid knife attacks as 10 arrested over ‘Bloody Friday’ threats

Prime Minister Donald Tusk has called for police to visit every school in Poland at least once a day.
Prime Minister Donald Tusk has called for police to visit every school in Poland at least once a day. Photo: PAP/Marcin Obara

Other schools have also tightened security, with some advising parents to keep children at home as police make series of nationwide arrests.