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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 Report on Investigation of 25 City-Run Homeless Shelters for Families Finds Serious Deficiencies
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Fraud Hot Line
Report Corruption
Commissioner Mark G. Peters
Significant Cases