A book detailing the horrific murder carried out by twisted Graham Dwyer is not stocked in the library of the prison where he is being held.
Dwyer is currently housed in the Midlands Prison where he is serving a life sentence for the murder of childcare worker Elaine O'Hara.
A book written by journalist Paul Williams - Graham Dwyer: Almost A Perfect Murder - is not kept in the libraries of the Midlands Prison and Arbour Hill for fear it could lead to bullying, a librarian with the Irish Prison Service confirmed.
Alison Lyons said certain books would not be stocked on shelves if an individual mentioned in them was being held at the facility.
"We would have a policy of not including books whose subject is in a particular institution," she said.
"We wouldn't have the book on the shelf because it could lead to bullying, or if details of somebody's family or private life was included in a book, it could be in bad taste.
"I know it's all out there, it's accessible, but we make the decision to try and do the best possible so that the book is not in the prison he is in. Nobody has asked for the book yet either."
Ms Lyons said the book is not banned across the country's nine prisons, only the institution where the prisoner is incarcerated and "Arbour Hill in that case" as well.
She also said that books about other notorious cases were excluded from the shelves of prisons where those involved were housed at the time of their incarceration, such as the Sharon Collins story, Lying Eyes: And the Hitman for Hire, by Emer Connolly.
"That book would not have been available in the Dochas Centre during that (Collins') incarceration," she told RTE Radio.
In 2008, Collins was found guilty of conspiracy to murder her former partner, PJ Howard, and his two sons, Robert and Niall, in 2006.
A source said that the books available in prison libraries are "at the discretion" of the librarian, while certain others are excluded from certain institutions "for obvious reasons".
"There wouldn't be a librarian for every prison. In fact, it is becoming more the case that prisoners are being left in charge of the content on the shelves, but it is up to the librarian in charge what books are allowed on the shelves," said the source.
Dwyer is currently held on E-Wing of the Midlands Prison in Portlaoise along with one of the country's most notorious paedophiles, a serial killer and a vicious rapist.
He shares the landing with a 32-year-old man who last week had his appeal against his life sentence for raping two young children rejected.
Also on the landing are Mark Nash (42), who is serving life for four savage murders, and Michael Murray (43), who is serving a 15-year-sentence for tying up and repeatedly raping a woman.
Dwyer was convicted of the murder of Ms O'Hara last March and sentenced to life in prison.