New York City Department of Investigation

The New York City Department of Investigation (DOI) is a law enforcement agency of the government of New York City that has been referred to by some observers New York City's "secret police" because its investigations are confidential and its investigators are not uniformed. DOI 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.

New York City Department of Investigation

The New York City Department of Investigation (DOI) is a law enforcement agency of the government of New York City that has been referred to by some observers New York City's "secret police" because its investigations are confidential and its investigators are not uniformed. DOI 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.