It happened around 7:20 p.m. at the Hunts Point subway station on Saturday, August 17.
Authorities say a man being sought first attacked the victim with a cane.
He then took out the sharp object and slashed the 36-year-old man across his hand and back.
The victim was treated and released from the hospital.
Anyone with information in regard to the identity of this male 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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