BROOKLYN, N.Y. - Police are searching for a man they say punched a female train conductor earlier this month in Coney Island.

Investigators say the man seen in surveillance video approached the 42-year-old victim at the Stillwell Avenue subway station on the afternoon of May 6.

He then allegedly punched her in the face, causing swelling, bruising and bleeding.

The conductor was taken to the hospital for treatment.

Her attacker left the station in an unknown direction.

The suspect is described as being in his 20's.

He was last seen wearing dark clothing and glasses.

Anyone with information on the case should contact the Crime Stoppers hotline at 1-800-577- 8477, or text CRIMES and then enter TIP577, or visit www.nypdcrimestoppers.com.