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The New York City Department of Investigation (DOI) is one of the oldest law-enforcement agencies in the country and an international leader in the effort to combat corruption in public institutions. DOI’s strategy attacks corruption comprehensively through systemic investigations that lead to high-impact arrests, preventive internal controls and operational reforms that improve the way the City runs.


What’s New:

DOI Statement on City Human Resources Administration Eligibility Specialist Convicted of Public Assistance Fraud Totaling More Than $250,000
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Manhattan DA's Office, DOI, Public Advocate's Office, DOB, and HPD Announce Charges Against Landlord, Property Manager, and Contractor for Creating Life-Threatening Conditions at East Harlem Apartment Building
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DOI Commissioner Mark G. Peters' Remarks at Press Conference on Announcement of Charges Against Landlord, Others for Creating Life-Threatening Conditions at East Harlem Apartment Building
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DOI Statement Regarding the Law Department's Provision of Records to DOI Related to an Ongoing Investigation
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2015 By The Numbers
Report Corruption
Commissioner Mark G. Peters
Significant Cases