New York City Department of Investigation
| DOI | |
Department of Investigation | |
| Department overview | |
|---|---|
| Formed | July 18, 1873 |
| Type | Local civilian police & Inspector General |
| Jurisdiction | New York City |
| Headquarters | Financial District, Manhattan, New York City |
| Motto | "New York City's Watchdogs" |
| Employees | 352 (2024) |
| Department executive |
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| Key document | |
| Website | www |
The New York City Department of Investigation (DOI) is a law enforcement agency of the government of New York City that serves as an independent and nonpartisan watchdog for New York City government. Established in 1873, it is one of the oldest law enforcement agencies in the country.