Police boost presence and detain 17-year-old after 'Bloody Friday' threat to Polish schools
What happened
Warnings about an alleged series of attacks on schools planned for 9 October have circulated on social media. Police say they are monitoring the situation and will deploy officers to schools they believe are at risk. In several towns in the Mazovia region, on-site classes have been cancelled. #EuropeNews
Summary assembled by rule from the sources below