It happened just before 12 a.m. Tuesday at an apartment building in the 3500 block of Webster Avenue in Norwood.
Police say gunfire erupted at a house party and sent people running.
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A 16-year-old boy was shot in the stairwell between the eighth and ninth floors of the building.
He was rushed to NYC Health & Hospitals/Jacobi, where he later died.
A 19-year-old man and a 22-year-old man were hurt.
No arrests have been made.
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