Scary elevator plummet

An elevator carrying about two dozen federal and local law-enforcement officers collapsed in a Brooklyn building Monday morning, according to police and other sources.

The unit failed at around 10 a.m. at the Industry City building in Sunset Park, the NYPD said.

“Hard drop, hard jolt, dust everywhere,” an officer who was inside told The Post, adding that the elevator fell one floor to the basement.

One detective suffered a back injury and was transported to NYU Langone Hospital, officials said.

The NYPD said there were no other injuries.

The agents, including some from the NYPD, were from the NY/NJ Regional Fugitive Task Force and the US Marshals Service, which was in the process of moving to the 34th Street building from Manhattan, a law-enforcement source said.