By Sara Powers

 (CBS DETROIT) – A viral video on Reddit leads to an investigation within the Detroit Police Department.

Here is the video that was posted:

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Detroit pig handing out the brain damage from BrutalBeatdowns

The video posted to Reddit on Aug. 1 shows a Detroit Police officer punching a man in Greektown, causing him to fall backward on the pavement.

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Officers later sat the man up, who was able to speak after the incident.

DPD confirms it did learn of the video via social media.

In a statement, the department says internal affairs is reviewing the matter and will give updates as soon as it can.

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