India, Feb. 19 -- Pope Francis has developed pneumonia in both his lungs, reports have said. He will now remain in the hospital as he battles the infection. The pope's condition is believed to have been complicated by his advanced age. He is now 88.

"Laboratory tests, chest X-ray, and the Holy Father's clinical condition continue to present a complex picture," the Vatican said in a statement, as reported by New York Post.

A Vatican spokesperson said that the pope remains in good spirits. The person added that the pontiff has said he has been grateful for the world's prayers since he was admitted to the hospital on Friday.

Last week, Francis battled a bout of bronchitis. He was taken to the hospital after it worsened. The pope is now un...