The Official Corruption & Economic Crimes (O.C.E.C.) Section is responsible for the investigation and supervision of all major fraud related and "white collar crime prosecutions" other than those completed by municipal authorities. The term "fraud case" applies to all cases involving financial defalcation, manipulation and other schemes of a criminal nature. The O.C.E.C. Section investigates and prosecutes crimes involving theft, bribery, embezzlement and all aspects of corruption and criminal misconduct in government (except police corruption which is investigated by the Professional Standards Bureau). Additionally, the Section handles election fraud investigations, insurance frauds, frauds in the court system, jury tampering, threats to members of the Superior Court judiciary and violations of the Open Public Meeting Act. While the majority of the investigations conducted by the Section are original investigations, a significant number are prompted by the receipt from municipal authorities of formal signed complaints.

The O.C.E.C. Section is staffed by three assistant prosecutors, one lieutenant, five investigators and one secretary. The legal staff oversees the day to day conduct of assigned investigations and works closely with the investigative staff by identifying and resolving legal problems that may arise, and directing the completion of various investigational steps to the point where the investigation may be recommended for either presentation to the Grand Jury, referral to some other appropriate authoritative body, or for termination and closure due to the lack of sufficient credible evidence. The investigative staff conducts interviews and takes sworn written statements from complainants and witnesses as appropriate, and where available and amenable, from targets of investigations.

The investigative staff also obtains voluminous and not readily available documentary and physical evidence including financial and bank records. Investigative audits are performed when appropriate. The investigator along with the assistant prosecutor assigned to the case, reviews and evaluates all acquired evidential documents, as they may relate to criminal conduct. The investigator then consolidates the evidential items into a coherent form for final legal review and recommendation. The investigators, under the supervision of the investigative supervisor, the assistant prosecutor assigned and the director of the section author both preliminary and final reports which serve as the authoritative basis for all official action taken by the Section.