They will meet in the Sistine Chapel and be housed in a closely monitored residence inside the Vatican city, the Casa Santa Marta.

WSJ: Vatican Begins Countdown to Conclave

Pope John Paul II had wanted a residence inside the Vatican walls to host contemplative religious orders, and over the years several different orders have come for spells of a few years, said Giovanni Maria Vian, editor of the Vatican newspaper L'Osservatore Romano.

NPR: Vatican Sends Message: Pope's Retirement For Real

PT, police dispatch logs reported the sound of a single gunshot from inside the residence.

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You know, obviously, if he comes inside the residence and assaults you, can you ask him to go away?

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"Initially responding deputies entered the home and found the five deceased inside the residence, so obviously it was a very gruesome scene, " Covington told reporters.

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The pope emeritus is expected to stay on at the papal summer residence until new accommodation being prepared for him inside the walls of Vatican City is ready at the end of April.

BBC: Pope Francis visits Benedict XVI at Castel Gandolfo