It happened early Monday at 3:24 a.m. at the Cypress Avenue 6 train station.
Authorities say the suspect stabbed the 30-year-old victim in the face several times before stealing cellphone and fleeing the scene.
The victim was taken to Lincoln Hospital with serious injuries to his face.
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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