New Orleans to hold memorial Mass for Pope Francis

• He was treated for double pneumonia before being released from the hospital in March.

What they're saying: "Pope Francis was a true man of God who called and challenged all of us to witness our faith in all aspects of our daily life," Aymond said in the statement.

• "His ministry stretched beyond the normal boundaries into the peripheries of those who have felt marginalized by our society."

The next pope will be the church's 267th.

How it works: They'll be chosen after a series of Vatican meetings and a papal election, called a conclave.

• In about 15 to 20 days, Cardinal electors will gather in St. Peter's Basilica for mass.
• Then, they go to the Sistine Chapel to begin rounds of super secret voting on the next pope.

When a winner emerges — and accepts the post — the ballots are burned with chemicals that produce a white smoke to signal a new pope has been chosen. Go deeper.

Go deeper: Religion in Louisiana looks less Christian, Pew study shows