Vatican City

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By Antoinette Radford in London & Davide Ghiglione in RomeBBC News

The Catholic Church has strict protocols in place following the death of its leader, but as ex-Pope Benedict's health wanes it is unclear whether those same protocols will apply to a retired pope, known as Emeritus.

When Benedict XVI resigned in 2013 citing Old Age , he became The First pope in 600 years to step down from The Role . Born Joseph Ratzinger, The German cardinal was elected in April 2005 and chose to go by the name of Benedict.

For almost a decade there have in effect been two popes living at Close Quarters in The Vatican , because Benedict has stayed in The Vatican Gardens at the Mater Ecclesiae monastery and appeared occasionally alongside his successor.

" We've never had this before where a living pope will help bury a dead pope, " Catholic historian John McGreevy said.

Even the Middle Ages do not provide a template, because when Gregory XII resigned in 1415 his aim was to bring an end to years of division involving rival challengers to The Papacy .

Typically, when a pope dies his death is confirmed and foreign heads of state are informally notified before Vatican radio breaks The News of his death.

The person who runs The Vatican from the death of One pope to the election of another is called a " camerlengo" currently Cardinal Kevin Farrell . But because Benedict is no longer Pope some of The Cardinal 's tasks may no longer be appropriate.

Normally, the camerlengo has The Role of officially confirming the pope's death, traditionally by tapping his head Three Times with a small silver hammer and calling out his name. He would also oversee the destruction of the pope's fisherman's ring, sealing the papal apartments, organising The Funeral and preparing a conclave to elect a successor.

As Francis is already Pope, there is considerable uncertainty about what the camerlengo will do.

A papal funeral is typically presided over by the Dean of the College of Cardinals, Cardinal Giovanni Battista Re. But in this case it is expected that Pope Francis will officiate over The Funeral . The Ceremony usually takes place either in St Peter's Basilica, or The Piazza in front of it.

The pope is then buried in The Grotto beneath the basilica.

Each pope can specify their own funeral arrangements, and although Benedict's family is buried in Germany, his biographer, Peter Seewald, said he wanted to be buried in The Tomb that belonged to his predecessor John Paul II before he was canonised and moved elsewhere in The Vatican .

The Most significant ritual following the death of a pope - electing a new One - will not happen.

But the exact protocols The Vatican will follow are unclear, as the Catholic Church is yet to release any public information.

Vatican affairs writer Massimo Franco told The Bbc that all the procedures would have to be " written from scratch" and that following Benedict's resignation in 2013 the Catholic Church did not specify what would be done in The Event of his death.

He also warned the possible death of Benedict could have unforeseen consequences on The Papacy , such as normalising the resignation of a Pope.

" For some within the Catholic Church , the resignation of Benedict represents a unique circumstance that will never have to be repeated.

" For others it may represent a precedent and therefore could be repeated. But this remains a big question mark, just like everything surrounding the death and funeral of Benedict XVI. "

As Benedict was previously The Head of state of Vatican City - an independent City -state surrounded by Rome and governed by the Pope - it is possible there will be a state funeral with foreign leaders invited, but even that to date is Uncharted Territory .

Source of news: bbc.com