Leverkusen (dpa / lnw) - The spraying of pepper spray - probably by a student - triggered a large-scale operation by the fire brigade in a comprehensive school in Leverkusen. As the fire brigade in Leverkusen announced on Tuesday, 30 boys and girls were injured - two of them seriously. They were taken to a hospital. Two classrooms were affected. The fire brigade received support from colleagues from Cologne and the Rheinisch-Bergisch district. The Cologne fire brigade brought a care bus to the school. The alarm went off around 9:40 a.m. First, Radio Leverkusen reported on the incident.