N.Y.C. Charter § 1128: Section 1128. Interference with investigation.

a. No person vent, seek to prevent, interfere with, obstruct, or otherwise hinder any study or investigation being conducted pursuant to the charter. Any violation of this section shall constitute cause for suspension or removal from office or employment.

b. Full cooperation with the commissioner of investigation shall be afforded by every officer or employee of the city or other persons.