The children, who were between ages 11 and 13, were part of Chœur d’Enfants d’Île-de-France, a French choir group that was visiting St. Paul’s Parish in Harvard Square to perform a free concert, Boston.com reported. PEOPLE has reached out to St. Paul’s Parish for further information.

C AMBRIDGE, Mass. -- Eight children at a church near Harvard University, where a French youth choir was holding a concert, suffered seizure-like symptoms and were taken to hospitals, officials said.

The youth chorus from Paris, whose members are between 11 and 13 years old, was performing as part of their US tour