Pope Francis rested overnight in the hospital, the Vatican said on Sunday. "The night passed peacefully. The Pope rested," the Holy See said in a short statement. The 88-year-old pontiff underwent another round of clinical tests on Sunday morning,

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, battling double pneumonia, remains in a critical condition for a second day running and his prognosis is still guarded, the Vatican said on Sunday. The pope, 88, was admitted to Rome's Gemelli hospital on February 14 after experiencing difficulty breathing for several days and subsequently had pneumonia diagnosed in both lungs.