Police say the 38-year-old woman was punched in the back of her head by the man.
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When she turned around, he punched her in the face, and then struck her several more times.
It happened on Sunday, March 7 at 6:50 a.m. as the train was arriving at the Myrtle/Wyckoff avenues station.
The attacker then got off the train and fled.
The woman suffered pain and bruising to her face.
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The man is described as Black, 30-40 years old, 5'10", and 180-190lbs. He was wearing a black du-rag, a gray sweatshirt, and blue jeans.
Anyone with information in regard to this incident is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).
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