The incident happened last Monday at 7:55 a.m., as the 15-year-old victim was riding a southbound 2 train.
Authorities say the man rubbed the girl's stomach as the train approached the 96th Street station.
She was able to exit at the next stop and get away safely.
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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