A building on Drexel University's campus has been evacuated due to a chemical leak.
Crews were called to Millennium Hall on the 200 block of North 34th Street this morning for a report of a leak from an air-conditioning unit on the 11th floor.
The Philadelphia Fire Department said the leak was small and has been contained.
The building remains evacuated. Authorities are ventilating the building before people are allowed back inside.