Police on Saturday said they detained 76 people across Poland and checked nearly 50,000 schools nationwide as part of efforts to prevent further violence following two school attacks earlier in the week.
On Friday, schools across Poland stepped up security, with some suspending classes, many parents keeping children at home and police patrols deployed to educational institutions after two attacks at schools earlier in the week left one person dead and several others wounded, including children.
On Wednesday, a 19-year-old student at a vocational school in the Mazovian province in central Poland attacked fellow students, teachers and passers-by with a sharp object, injuring nine people before fleeing and being arrested nearby. The following day, a 15-year-old killed a school custodian and wounded two others in a knife attack at his former school in the same province.
The assaults, both carried out by Polish nationals, shocked a country where school violence by minors is a new phenomenon.