It happened just after 5 p.m. Saturday outside the Sumner Houses in Bed-Stuy.
The shooter struck a 28-year-old man in the head, killing him.
Another 28-year-old was hit in the stomach and a 32-year-old was shot in the back - both are in stable condition.
The gunman fled the scene.
The circumstances surrounding the shooting are unknown. An investigation is underway.
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