VATICAN CITY — Cardinals return 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.

The doors of the Sistine Chapel at the Vatican were closed on Wednesday, signalling the start of a secret conclave where 133 cardinals from around the world will elect a new pope. Latin chants and organ music had accompanied the cardinals as they processed into the frescoed chapel,

The door to the Sistine Chapel closed as the cardinals begin the process of choosing the new pope. The conclave starting Wednesday is the most diverse in history, with cardinals coming from all over the world to elect the next pope.