A New York City police officer accused of hitting a bicyclist with his car and driving off without reporting it was charged on Tuesday with assault and reckless driving.

On the afternoon of June 14, the authorities said, the officer, Louis Ramos, was headed the wrong way on Jay Street in Brooklyn, with his lights flashing and siren blaring, when he drove through a red light and struck the cyclist at Sands Street.

Officer Ramos and his partner, Paris Anderson, got out of their police car, dragged the cyclist to the curb, handed him a tissue and drove off without calling an ambulance or reporting the accident, said Charles J. Hynes, the Brooklyn district attorney, in a criminal complaint. Surveillance cameras captured the encounter.

The cyclist suffered cuts and bruises on his face and a fractured wrist. He was treated at Long Island College Hospitaland released.