A freshman chemistry class experiment at Villanova University sent several students to a hospital, according to reports.

Several students and a faculty member were taken to a hospital. Police told NBC10 that symptoms ranged from difficulty breathing to nose bleeds and some more severe symptoms.

Mendall Hall , a university academic building, was evacuated at 2:30 p.m. Tuesday, according to the university.

A student told Action News that they left their classrooms thinking it was a firedrill when the alarm was pulled.

Police said that the situation was contained.