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Arrests resulting from DOI investigations
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Arrests from DOI investigations dropped 37% in Fiscal 2025. DOI's own reporting says this reflects a shift toward fewer, more resource-intensive investigations of smaller numbers of people, which tends to reduce both referral and arrest counts even when overall casework holds steady. The Fiscal 2026 number is a year-to-date total (47 arrests through the first four months, per DOI's preliminary report) rather than a full year of activity, and is likely to grow before the fiscal year closes.
Researched July 15, 2026 — DOI, Fiscal 2025 Mayor's Management Report, DOI, Fiscal 2026 Preliminary Mayor's Management Report
* Year to date — this fiscal year isn't complete, so it's not compared against prior years in the target/trend status above. The dashed marker projects a full-year estimate at the current year-to-date pace.
View as table
| Fiscal year | Actual |
|---|---|
| FY22 | 288 investigations |
| FY23 | 313 investigations |
| FY24 | 349 investigations |
| FY25 | 220 investigations |
| FY26 (YTD) | 94 investigations |
| FY26 (projected) | ~125 investigations |
Why this is tracked
DOI began as the Office of the Commissioners of Accounts in 1873, established after the corruption of the Tweed Ring exposed how easily city money could be looted without independent checks. It was renamed the Department of Investigation in a 1938 charter revision and remains one of the country's oldest municipal law-enforcement agencies. Today it investigates fraud, corruption, and misconduct by City employees, contractors, and anyone doing business with or receiving funds from the City, including running vendor integrity screening (VENDEX) and an Integrity Monitor Program for contractors with past compliance issues.
DOI Mission and History, New York City Department of Investigation - Wikipedia, DOI Vendor Integrity
Source: Case Management System — via NYC Open Data: Mayor's Management Report, Agency Performance Indicators
Coverage shown: FY22–FY26, reported monthly.
Definition: The number of arrests by the Department or federal, state or local law enforcement agencies based on information developed in a DOI investigation.