A significant incident unfolded at Raderthal School in Cologne, Germany, today, resulting in injuries to 20 children. The altercation, which occurred around 2.20pm, involved teenage pupils and led to the deployment of pepper spray. Emergency services were dispatched to the scene after initial reports indicated one injury. However, the situation escalated quickly, prompting a "mass casualty incident" alert as multiple pupils were found suffering from severe eye irritation. Nine children, aged between 12 and 14, were transported to local hospitals for further treatment. A spokesperson from the local fire department stated, "Initial reports indicated one person was injured. However, it quickly became apparent that several children were suffering from severe eye irritation." Police believe the incident was instigated by a single 16-year-old student who used the pepper spray. Authorities are currently investigating the full circumstances surrounding the event. This incident has raised concerns about safety within schools and the potential consequences of such actions among students. Emergency services remain on site to assist and gather more information. Further updates will be provided as the investigation continues.