Crowds arrive to attend a mass celebrated by Pope Francis for the canonisation of Mother Teresa of Calcutta in Saint Peter's Square at the Vatican September 4, 2016. REUTERS/Stefano Rellandini

Crowds arrive to attend a mass celebrated by Pope Francis for the canonisation of Mother Teresa of Calcutta in Saint Peter’s Square at the Vatican September 4, 2016. REUTERS/Stefano Rellandini

Crowds arrive to attend a mass celebrated by Pope Francis for the canonisation of Mother Teresa of Calcutta in Saint Peter's Square at the Vatican September 4, 2016. REUTERS/Stefano Rellandini

September 4, 2016 4:56 AM (UTC+8)