It happened at the Heart of Mary School in Palermo. Four of the boys had to be taken to hospital.

Two minors were preliminarily assisted for feeling dizzy and nauseated. Two of them were transferred by the SAME to the Ricardo Gutiérrez Children's Hospital and another to the Bazterrica Clinic, for carbon monoxide poisoning. The troops proceeded to evacuate the establishment in order and without panic. It happened on Guise Street at 1900, after a complaint for the smell of gas.