The smoke billowed out at 9 p.m. Wednesday, some four hours after 133 cardinals solemnly entered the Sistine Chapel, took their oaths of secrecy and formally opened the centuries-old ritual to elect a successor to Pope Francis to lead the 1.4 billion-member church.
With no one securing the necessary two-thirds majority, or 89 votes, the cardinals will retire for the night to the Vatican residences where they are being sequestered.
They return to the Sistine Chapel on Thursday morning.
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