Civil rights groups say barricades surrounding New York City's Zuccotti Park violate zoning law by restricting public access.
The New York Civil Liberties Union and the National Lawyers Guild filed a complaint Monday with the buildings department.
The Manhattan park was once a base for the Occupy Wall Street movement.
The complaint says the metal barricades that have surrounded the plaza since Nov. 15. interfere with the public's use of the park. Zuccotti Park is a publicly owned private plaza and is required to be open 24 hours a day, barring a safety issue.
City zoning law states that the layout and design of such plazas must promote public use and "free and easy pedestrian circulation" throughout the space.
Buildings department spokesman Tony Sclafani says inspectors have determined no violation has occurred at the park.