The Holy See has announced that blood tests showed early signs of kidney failure in Pope Francis, who has been in hospital battling a complex lung infection for over a week.

ROME -- Pope Francis was resting Monday morning after a quiet night, on the 10th day of his hospitalization for a complex lung infection that has provoked the early stages of kidney failure, the Vatican said. The one-line statement didn’t say if Francis, 88, had woken up. “The night passed well, the pope slept and is resting,” it said.

Pope Francis remains in "critical" condition after being hospitalized on Friday, February 14, for bronchitis. Although the Vatican insists that the pope remains alert and "well-oriented," blood tests have shown early kidney failure.