Pope Francis, battling double pneumonia, remains in critical condition for the fourth day running but is stable and has not had any further respiratory crises, the Vatican said on Tuesday. The 88-year-old pope was spending his 12th night at Rome's Gemelli hospital,

Pope Francis' condition remains critical but stable and he was able to do some work while still in the hospital with double pneumonia, the Vatican said in a Tuesday evening update.

Pope Francis "rested well throughout the night" in the hospital, the Vatican says, and even met with Vatican officials to sign several documents linked to sainthood designations on Monday.