Tempers flared on the subway as an argument between riders in Queens turns violent.

Police are looking for the alleged attacker seen in this video.

It shows the fight, which happened Thursday evening near the Forest Hills, 71st Avenue station.

Investigators say the woman hit the 39-year-old victim with her bag, and when confronted about it, she became violent.

The victim suffered scratches to her arms and face, but refused medical attention.

She left the train while her attacker stayed on board.