More clinical tests were being performed on the 88-year-old pope, who had part of one lung removed as a young man.

Pope Francis was in critical condition Saturday after he suffered a long asthmatic respiratory crisis that required high flows of oxygen, the Vatican said.

Pope Francis, in critical condition with a complex lung infection, rested well during a peaceful night following a respiratory crisis and blood transfusions, the Vatican said Sunday. Vatican spokesman Matteo Bruni's one-line statement early Sunday didn't mention if Francis was out of bed or eating breakfast.