A school employee was injured and students were forced to evacuate following a chemical spill at a Harlem school Friday.
It happened on the first floor of the Percy Sutton Educational Complex on Edgecombe Avenue.
The Department of Education said the chemical was nitric acid and was with other bottles of chemicals in a classroom.
A fire safety employee suffered a burn.
No students were injured, but they waited outside the building for more than a half an hour while fire, police and hazmat teams responded.
The building houses several schools, including Bread and Roses High School, Mott Hall High School, KAPPA IV and Eagle Academy.
The incident is under investigation.