A student at a technical college in the German city of Dortmund has been injured in an unspecified attack, with one suspect detained and another on the run, police said on Wednesday.
A major police operation was under way but the incident at the Paul Ehrlich school cannot be considered a "rampage," a police spokesperson added.
Police said the victim was a 19-year-old student and the injuries were not life-threatening.
Media reports said it had been a knife attack but the police would not confirm this.
The grip of a knife had been found, the spokesperson said, but it is unclear if this was used in the incident.
The search for the second suspect continues.
