Woman injures three people in third Poland school knife attack in a week
A woman has been arrested after injuring three people in a third knife attack recorded at schools in Poland this week.
The 21-year-old used a "dangerous object" to attack a 17-year-old girl at an educational institution in the capital, Warsaw, police told news agencies PAP and AP.
It comes 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.
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