July 7, 2026, 12:08 PM EDT / Updated July 7, 2026, 12:09 PM EDT / Source: NBC New YorkBy Jennifer Millman, NBC New YorkTwo structural support beams on the 21st floor of a 37-story under-construction building in Manhattan started buckling Tuesday morning, triggering a mass evacuation, street closures and a large emergency response, officials say.The FDNY said it got a call around 8 a.m. about bricks falling from the building at 235 East 42nd Street, between Second and Third avenues. The NYPD says it got a 911 call about the incident less than 15 minutes later.When cops got to the scene, the NYPD says officers were told that construction workers on the 21st floor of the commercial building saw the columns beginning to collapse.NYPD officers talk about buildings in the area that were evacuated on Tuesday in New York.Angelina Katsanis / APRaw footage from inside, taken by a construction worker, showed crumbling steel beams on the 21st floor.It wasn’t clear how many workers were in the building at the time. An evacuation was ordered out of caution. Neighboring buildings were also evacuated — a growing number of them as the response escalated.The Department of Buildings said at least nine other buildings had been evacuated as a precaution.No injuries were reported, according to police. Pedestrian and vehicular traffic was closed on East 42nd between Second and Third avenues to assist the response. City traffic cameras showed a major response.A building has been evacuated in New York City on Tuesday.Charly Triballeau / AFP via Getty ImagesThe building, formerly home to Pfizer’s global headquarters, is being converted into a 1,500-unit luxury rental complex. The Department of Buildings says it has an active permit for construction.The agency says it has inspectors on site. Both it and the NYPD describe their investigations as ongoing.The FDNY is expected to hold a press conference soon. NBC New York will stream it live when it starts.