Cardinals are returning to the Sistine Chapel to continue voting for a new pope. The first conclave ballot failed to find a winner, sending black smoke through the chapel chimney.

The black smoke confirmed the 133 cardinal electors sequestered inside had not reached the required two-thirds majority — at least 89 votes — needed to elect a new pope.

The conclave to select the next pope has begun after Catholic cardinals from across the world filed into the Sistine Chapel Wednesday before sealing themselves inside.