A new book alleges sexual encounters are common in the Vatican's youth seminary.

In Original Sin, Italian journalist Gianluigi Nuzzi features testimony from a gay ex-seminarian who recounted how an adult, now a priest, would come into his dorm room and have oral sex with his roommate at St. Pius X pre-seminary, a school for middle and high-schooler boys considering the priesthood.

The man confirmed that the boys were both under 18 at the time of the incident. Nuzzi said his attorneys have given a copy of the book to the Vatican's criminal prosecutors.

A 2014 letter from the Vatican's Congregation for the Doctrine of the Faith to the ex-seminarian, also included in the book, determined that no sexual abuse of a minor had occurred but that it was referring the case to the Vatican's office for clergy.

The book also reproduces documents from the Vatican bank, indicating multi-million-dollar accounts owned by Popes Paul VI and John Paul II and their secretaries, and alleges a secret cabal is working to block reforms by Pope Francis. It also explores the 1983 disappearance of Emanuela Orlandi, the 15-year-old daughter of a Vatican employee.

In 2015 Nuzzi was put on trial by the Vatican for publishing confidential documents that exposed corruption and mismanagement.