The Office of the Director of Public Prosecutions is the principal public agency for conducting criminal prosecutions in the Republic of Ireland. It is led by the Director of Public Prosecutions (DPP) and was founded in 1974, taking over prosecutorial functions previously held by the Attorney General of Ireland.

The office reviews case files prepared by law-enforcement agencies, including the Garda Síochána, and decides whether to prosecute. It conducts prosecutions in Dublin and directs State Solicitors in cases elsewhere in the country. It may also instruct outside counsel to appear in court.

In the case involving Daniel Kinahan, a barrister representing the DPP told the court that the book of evidence was expected to be ready by the scheduled December appearance.