The function of the Public Prosecutors Office is to exercise control over all the work handled by the public prosecutors. The public prosecutors offices consist of the Supreme Public Prosecutors Office (in Tokyo), the High Public Prosecutors Offices (in Tokyo, Osaka, Nagoya, Hiroshima, Fukuoka, Sendai, Sapporo and Takamatsu), the District Public Prosecutors Offices (one each in the 46 prefectures except for Hokkaido, where because of the large size of its administrative area there are four offices) and Local Public Prosecutors Offices (one each in major cities,wards or towns). Each of the high public prosecutors offices and the district public prosecutors offices has branches to handle parts of their work. Public prosecutors offices are staffed with public prosecutors (Prosecutor-General, Deputy Prosecutor-General, Superintending Prosecutors, Public Prosecutors and Assistant Prosecutors) and public prosecutors’ assistant officers.
In criminal cases, public prosecutors have the power to investigate any criminal offense, decide whether or not to institute prosecution, request proper application of law by courts and control and supervise the execution of judgment, and furthermore, as representatives of public interests, may perform such other functions as are authorized by the Civil Code and other laws.
Prosecutorial power is exercised for the purpose of maintenance of the law and order of the nation and society. The exercise of prosecutorial power is based on the principle of strict fairness and impartiality, and cases are handled with due respect to the human rights of the suspects.