An Italian publisher released advanced copies of a tell-all book about the Vatican hours after the funeral of the former Pope Benedict XVI.

An aide to Benedict said that the setting in the holy city was created by Benedict's resignation and refusal to leave the Vatican.

The former and current popes butted heads over their positions when they were in office, according to a new book written by the former pope's secretary.

Pope Francis shakes hands with Pope Emeritus Benedict XVI in 2015
Pope Francis greets Pope Emeritus Benedict XVI during a mass to create 20 new cardinals during a ceremony in St. Peter's Basilica at the Vatican Feb. 14, 2015.

The funeral mass was held in Saint Peter's Square.

Benedict's hardline approach to social issues contributed to a lot of criticisms of Francis.

Benedict's personal secretary from 2003 to his retirement in 2016 was Ganswein.

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After Pope Francis was appointed, the 66-year-old continued to work as a private secretary to Benedict.

The first Pope to resign in 600 years was kept out of the picture by Francis, according to a report.

Archbishop Georg Ganswein
VATICAN - 2023/01/02: Archbishop Georg Gänswein prays in front of the body of Pope Emeritus Benedict XVI at St. Peter's Basilica. The Vatican announced that Pope Benedict died on December 31, 2022, aged 95. His funeral was held on January 5, 2023.

Pope Francis paid respects to the dead Pope Pontiff's life, legacy and nobility.

A book written by Cardinal Robert Sarah about priestly celibacy caused a controversy that led to the firing of the prefect.

The former pope objected to Sarah's claim that he was co-author of the book and wanted his name removed.

Francis wasn't happy with how Ganswein handled the issue and told him not to come back to work tomorrow, but he was allowed to stay with Benedict.

DECEMBER 23: Pope Francis met former Pope Benedict XVI to exchange Christmas greetings, in the Mater Ecclesiae monastery, Benedict XVI's new residence on December 23, 2013, in Vatican City.

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Benedict wrote two letters to Francis to try and clear up the situation and stated that he was under attack from all sides.

The book's announcement came just two days after Benedict's death, with the publishers promising to reveal the truth about the "dark maneuvers that have tried in vain to cast shadows on the German pontiff's magisterium and actions."

The Vatican was not reachable by Fox News.