Pope Francis died Monday morning in the Vatican City, less than a day after greeting a huge Easter Sunday gathering of Catholics in St. Peter's Square and issuing a plea for world peace. He was 88.

Pope Francis has died, the Vatican announced on Monday—after months of severe health ailments, including a bout of severe pneumonia—ending a more than decade-long reign where he pushed to make the Roman Catholic Church a more inclusive institution despite pushback from traditionalists.