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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. It serves the Mayor and the people of New York City as an independent and nonpartisan watchdog for the City government.


What’s New:
DOI Commissioner Mark G. Peters Selects First Inspector General for the NYPD. Click here to read more

Fraud Hot Line
Report Corruption
Commissioner Mark G. Peters
Significant Cases