NEW YORK (AP) — Crews worked overnight to shore up a massive, under-construction apartment building in Manhattan after some of its columns buckled and floors sagged, triggering widespread evacuations and street closures over concerns about a collapse.

Officials said the building, once the former headquarters of pharmaceutical giant Pfizer, has been stabilized, but some surrounding buildings were still under evacuation orders and normally busy midtown streets remained closed Wednesday as work continued at the site.