Pope Francis suffered two respiratory crises on Monday (Mar. 3), after over two weeks of being treated at the Roman Hospital Gemelli for pneumonia in both lungs. In a statement issued by the Vatican,

Pope Francis experienced two respiratory episodes Monday caused by a buildup of mucus, another setback for the Catholic Church leader as he nears his third week of hospitalization. The Holy See Press Office said the breathing setbacks were created by a buildup of mucus in the pope’s lungs and a bronchial spasm (a sudden tightening of airway muscles making breathing difficult).

The Vatican said that Monday’s two crises were caused by a significant accumulation of mucus in his bronchial tubes.