Pope Leo XIV will be inaugurated as pontiff at a Mass in St Peter's Square. The service will mark the official start of his papacy. Leo was chosen as the new leader of the Catholic Church earlier this month following the death of his predecessor, Pope Francis, and a two-day conclave in Vatican City.

Pope Leo XIV’s inauguration Mass on Sunday morning at St. Peter’s Square is an ancient ritual filled with symbolism that connects back to Peter, Jesus’ apostle, and his special mission as head of the Catholic Church.