A cardboard box filled with official NYPD uniforms was found near a Brooklyn cemetery, police said Sunday.

The bizarre find was reported to police at about 8:30 p.m. Tuesday on an industrial Borough Park street between Green-Wood Cemetery and an MTA train yard, a NYPD spokesperson told The Post.

Cops sifted through the discarded box – containing pants, shirts, jackets and even hats – at the corner of 37th Street and Ninth Avenue Tuesday night, according to a video posted to X on Jan. 1.

NYPD sergeant patches and stripes on a uniform.A mysterious cardboard box filled with official NYPD uniforms was found near a Brooklyn cemetery Tuesday, police said. Luiz C. Ribeiro for New York Post

Officers moved the box to the nearest precinct – located nearly 2 miles away on 16th Avenue – for “safekeeping” a spokesperson said.

An investigation is ongoing, the rep confirmed.

Police officers examine discarded police uniforms.Cops sifted through the discarded box – containing pants, shirts, jackets and even hats – at the corner of 37th Street and Ninth Avenue Tuesday night, according to a video posted to X on Jan. 1.

The discovery came less than 48 hours before Mayor Zohran Mamdani was inaugurated in Manhattan.

Some social media users had speculated there might be a connection to Mamdani’s swearing in despite nothing outwardly connecting the events.

Mamdani has been a harsh critic of the NYPD, and previously called for defunding the force during the 2020 Black Lives Matter protests while describing officers as “racist” and “anti-queer.”