Manhattan high-rise is still unstable
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The New York City high-rise, deemed at risk of collapsing Tuesday, has 44 prior complaints against it, including allegations that a worker was blowing material off the roof, according to the city's Department of Buildings.
A New York City high-rise was evacuated during its ongoing renovation after multiple "buckling" beams were found inside the building. NBC News' Tom Winter reports on what could have caused the emergency situation at the former Pfizer headquarters.
