One man apparently smashed multiple windows at the building in the United Nations Plaza at 1st Avenue and East 46th Street on the East Side of Manhattan.
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Police discovered the broken windows at around 3:15 a.m.
"We were shocked, we didn't understand at first what was happening. Obviously it's very concerning, I don't know if it's like a hate crime, I don't know if it's targeted, and I don't know why anyone would do that," said Sibel Szüer Zorlu, a voter.
No arrests were immediately made.
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Police are canvasing the area for surveillance video.
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