Disturbing video released Tuesday shows a man randomly punching a 65-year-old man in the face as he’s walking along a Brooklyn Heights street.

The attack was captured on surveillance video and shows the suspect walking with a group of people down Joralemon Street near the corner of Henry Street, as the victim is walking in the opposite direction around 11:15 p.m. July 6.

As the man nears, the suspect can be seen taking a running start as he gears up to land the punch, which broke the victim’s glasses and knocked him over a fence and into some bushes. The attacker then calmly walks off with the group as the man struggles to get back on his feet.

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The sucker punch recalls the sick 'knockout game,' in which criminals try to render their victims unconscious with a single blow.

The victim was taken to an area hospital, where he was treated and released.

Cops described the suspect as a black male standing around 5 feet 10 and weighing around 160 pounds. He was last seen wearing a white T-shirt and sneakers.

Police are asking anyone with information in regards to this incident to call the NYPD’s Crime Stoppers Hotline at 1-800-577-TIPS (8477).

Be aware of your surroundings when walking in urban areas:

This is how is goes in the Knockout Game, one distracts you and the other sucker punches you. Being situationally aware can go a long way to preventing these types of attacks.