The student attacked the school’s employees with a knife around mid-morning.
Archived version: https://archive.is/newest/https://www.straitstimes.com/asia/students-stabbing-rampage-injures-3-in-south-korea
Disclaimer: The article linked is from a single source with a single perspective. Make sure to cross-check information against multiple sources to get a comprehensive view on the situation.
Gotta love random stock photos. My favourite one was an article about some youngsters who drowned, and the stock photo was like a hand coming out of the water, as if it was just drowning.