A video was released Tuesday of a New York City teen who was rendered unconscious after an NYPD officer restrained him.

A screenshot from the video taken of a NYPD officer restraining Marcel Hamer, and eventually knocking him out.

According to New York Magazine, the family of Marcel Hamer, 17, posted a video to YouTube showing a plainclothes officer using force on the teen.

Lawyers representing Hamer say the boy was suspected of smoking marijuana, but was charged for disorderly conduct, New York Magazine adds. In the video, you can hear Hamer say, "Mister, it was just a cigarette, sir," before the officer strikes the restrained teen.

The Brooklyn Paper reports that in the video, a second man, identified as an undercover officer, runs over and helps the cop put cuffs on Hamer. The teen remains motionless for 45 seconds between the punch and the video's end.

As a result of this incident, Hamer's family is calling for the officer to be criminally prosecuted, The Brooklyn Paper adds. Hamer's mother says the boy has experienced headaches, dizziness and memory loss since the incident.

The name of the NYPD officer has not been released, and the NYPD comments that the incident is under investigation by the department's Internal Affairs Bureau, The Brooklyn Paper says.

WARNING: The video below contains graphic content and explicit language that may disturb some viewers.