Overview
- The accident occurred Thursday, October 29, when concrete elements collapsed into a stairwell in the extension of the Werner‑von‑Siemens‑Gymnasium, killing two workers and injuring two others.
- Around 15 people were on site at the time and emergency teams including about 35 firefighters, three ambulances, an emergency doctor, two THW advisers and a rescue helicopter responded to the scene.
- Police preserved the site for forensic work and opened a criminal investigation to establish whether a prefabricated stair unit failed or a lifted part fell from a crane.
- City officials and Notfallseelsorge provided on‑site support, and municipal leaders say school operations could resume only after the police give formal clearance following the inquiry.
- German procedure for fatal workplace accidents usually involves scene preservation and criminal and occupational‑safety reviews, which could lead to further inspections or enforcement actions depending on the investigation's findings.