Cardinals returned to the Sistine Chapel on Thursday to resume voting for a new pope after the first conclave ballot failed to find a winner, sending billowing black smoke through the chapel chimney.

Black smoke rose from the chimney of the Sistine Chapel in the Vatican for the second time, indicating the cardinals meeting in the papal conclave were again unable on Thursday morning to agree on a new leader for the Catholic Church.

One hundred and thirty-three cardinals are beginning centuries-old rituals to elect a successor to Pope Francis.