A tanker carrying 23 tons of nitric acid overturned on the A57 motorway near Krefeld, western Germany, causing a chemical leak and prompting an emergency alert. Schools were closed, and residents were told to stay indoors, close windows and doors, and switch off ventilation and air conditioning systems. The injured tanker driver was taken to hospital, while police, firefighters and chemical experts responded to the scene. The leak was brought under control, and the cause of the accident remains under investigation.