Woman punched in the face in Brooklyn subway

A woman was punched in the face at the 9th Avenue subway station, police say. 
The incident happened on Nov. 12 around 4 p.m. 
Police say the suspect had just gotten off a northbound D train when he walked up to the 24-year-old woman and punched her in the face. 
She refused medical attention at the scene.
Police have released a surveillance video of the suspect.