A New York City highrise that was under construction when columns buckled and bricks tumbled into the street below during the Tuesday morning rush hour remained unstable and was still moving, forcing nearby buildings to evacuate, officials said.

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Several buildings in Midtown Manhattan were evacuated Tuesday morning after officials discovered buckling support beams in a former office building that is being converted to…

Firefighters evacuated the high-rise building at 235 E. 42nd St. due to concerns about floors 21 through 26 of the building caving in.