A video is making the rounds Thursday showing an incident involving an alleged fare-skipper and several NYPD officers. But it's not just the video that's the main focus -- it's also the sound.

In it, two uniformed officers can be seeing struggling with a suspect. Not long after, a plainclothes officer is seeing rushing to their aid as they struggle with the man on the ground. That's when the undercover cop cocks his right leg and unleashes a blow to the head of a man on the ground, letting out and audible thud.

There's one big problem: the man he kicked was not even the suspect, it was a fellow officer.

“He kicked the cop,” a woman can be heard chuckling off camera. The kicking cop eventually rubs the head of the officer he unloaded on. It then appears the officer punches the suspect while several voices accuse him of resisting.

(Source: DNA Info video screen shot)

While it's a problem that the officer kicked a fellow member of the force in the head, that's not to say it's the only problem. And in fact, it seems the NYPD sees it that way, too. According to DNA Info, the officer was stripped of his gun and badge and placed on modified duty while internal affairs and the Brooklyn district attorney investigate.

The incident occurred in January on Coney Island, but is getting renewed attention now that the clip has resurfaced. DNA Info says the suspect pled guilty to a lesser charge.

(H/T: Mediaite)