The canonization of the first millennial saint, Carlo Acutis, has been postponed due to the death Monday of Pope Francis, the Vatican announced. Acutis was to be canonized next Sunday in St. Peter’s Square on the occasion of the Jubilee celebration for adolescents.

In the months leading up to the expected canonization, the faithful have been flocking to Assisi, Italy, where his body — wearing sneakers, jeans and a sweatshirt — lies in a shrine. He was 15 when he died in northern Italy in 2006 after a short bout with leukemia.