Overview
- City officials said an unknown liquid found in a boys’ restroom at Oberschule Gesundbrunnen triggered the Wednesday response.
- Eight people were treated for airway irritation, including pupils, teachers, and school employees, according to the latest update.
- The restroom and nearby rooms were sealed off as hazardous-materials specialists were called to test the substance.
- Earlier police statements indicated the spray was likely pepper spray, but authorities have not confirmed the exact material.
- Firefighters conducted measurements with an ABC unit, the building was ventilated without a full evacuation, and police opened an investigation.