Catholic cardinals are returning to the Sistine Chapel on Thursday for a second day of voting to try and elect a new pope. The 133 cardinals are expected to vote again in the morning after spending the night sequestered at the Vatican residences.

A group of 133 cardinals has not reached a decision in the first vote of the conclave after the process, which is shrouded in secrecy and ceremony, took longer than expected

A conclave of as many as 250 Catholic cardinals at the Vatican produced black smoke, indicating no result, following the first vote to elect a new pope on Wednesday evening.