Polish police say a man has been arrested after a knife attack at a school in central Poland injured at least 7 people

A 19-year-old man in Poland has been arrested after a knife attack on Wednesday that left at least seven people injured at a vocational school in a city north of the capital, Warsaw. WARSAW, Poland (AP) — Polish police say a man has been arrested after a knife attack at a school in central Poland injured at least 7 people.