The pope rested well all night,” the Vatican said in its update from Gemelli hospital, where Francis has been hospitalized since Feb. 14.

In a late update, the Vatican said the episodes were caused by a ‘significant accumulation’ of mucus in his lungs and bronchial spasms

Pope Francis suffered two episodes of "acute respiratory insufficiency" on Monday, the Vatican said, a setback for the 88-year-old pontiff as he battles double pneumonia. Francis, who has been in Rome's Gemelli Hospital since February 14,