Francis is being treated for pneumonia, a complex infection and kidney problems that have left him in critical condition.

Pope Francis, in hospital in a critical condition with pneumonia in both lungs, passed a good night and was resting, the Vatican said Monday. The 88-year-old pope, the leader of the worldwide Catholic Church since 2013,

Pope Francis was found to have pneumonia in both his lungs Tuesday and his condition remains "complex," the Vatican said in a health update on the 88-year-old pontiff who was hospitalized last week. The big picture: The pope was admitted to Rome's Agostino Gemelli Hospital on Friday with bronchitis symptoms and his treatment was changed after doctors found he had a polymicrobial infection of the respiratory tract.