Poland Detains 76, Checks 50,000 Schools After Attacks

Polish authorities mounted a nationwide security response after two school stabbing attacks in two days left one person dead and several others injured, prompting school closures, heightened patrols and inspections. Police detained young people over threats against schools and students, including posts and videos involving knives and alleged attack plans. Rumors of a coordinated “Bloody Friday” challenge spread online, but officials said they had found no evidence of a nationwide plot, while warning that threats, misinformation and possible copycat attacks remained concerns.