Prosecutor

A prosecutor is a legal representative of the prosecution in states with either the adversarial system, which is adopted in common law, or inquisitorial system, which is adopted in civil law. The prosecution is the legal party responsible for presenting the case in a criminal trial against the defendant, an individual accused of breaking the law. Typically, the prosecutor represents the state or the government in the case brought against the accused person.

Prosecutors are typically lawyers who possess a law degree and are recognised as suitable legal professionals by the court in which they are acting. This may mean they have been admitted to the bar or obtained a comparable qualification where available, such as solicitor advocates in England law. They become involved in a criminal case once a suspect has been identified and charges need to be filed. They are employed by an office of the government, with safeguards in place to ensure such an office can successfully pursue the prosecution of government officials. Multiple offices exist in a single country, especially in those countries with federal governments where sovereignty has been bifurcated or devolved in some way.

Since the power of the state backs prosecutors, they are subject to special professional responsibility rules in addition to those binding all lawyers. For example, in the United States, Rule 3.8 of the ABA Model Rules of Professional Conduct requires prosecutors to "make timely disclosure to the defense of all evidence or information that tends to negate the guilt of the accused or mitigates the offense." Not all U.S. states adopt the model rules; however, U.S. Supreme Court cases and other appellate cases have ruled that such disclosure is required. Typical sources of ethical requirements imposed on prosecutors come from appellate court opinions, state or federal court rules, and state or federal statutes (codified laws).

In most Commonwealth Nations, the head of the prosecuting authority is known as the director of public prosecutions (DPP) and is appointed, not elected. A DPP may be subject to varying degrees of control by the attorney general, a formal written directive which must be published.

In Australia, the Offices of the Director of Public Prosecutions institute prosecutions for indictable offences on behalf of the Crown. At least in the case of very serious matters, the DPP will be asked by the police, during the investigation, to advise them on the sufficiency of evidence and may well be asked to prepare an application to the relevant court for search, listening device or telecommunications interception warrants.

More recent constitutions, such as South Africa's, guarantee the independence and impartiality of the DPP.

Prosecutors in Australia come in a few distinct species. Prosecutors of minor criminal cases in lower courts are police sergeants with a traineeship in prosecution and advocacy lasting approximately one year in duration, although they may hold law degrees. Crown Prosecutors are always lawyers and typically barristers, and they represent the state or Commonwealth in serious criminal cases in higher courts, County Court and above. Aside from police prosecutors and Crown prosecutors, government agencies have the authority to appoint non-lawyers to prosecute on their behalf, such as the RSPCA Inspectors.

In Canada, public prosecutors in most provinces are called Crown Attorney or Crown Counsel. They are generally appointed by the provincial Attorney General.