The city of Chicago is still taken aback by the sheer brutality employed in the vicious beating of a local teenager.

16-year old Derrion Albert was murdered, the victim of a gang assault while leaving Fenger High School in Roseland, Illinois, a suburb of Chicago.

In a “free-for-all”-esque brawl that witnesses say lasted for less than five minutes, Albert become collateral damage in a fight that was originally meant to be between two warring cliques.

Dozens of students watched as the honor roll student was pummeled with fists after being blindsided by a crushing blow to the skull with a board.

“After he hit the concrete, a gang of them just came over and started stomping him in the head and started beating him,” said an anonymous eyewitness to the tragedy. “It was over for him.”

Security cameras, housed on building near the crime scene, caught the incident and were used to identify as many perpetrators as possible.

To date only three assailants have been caught in connection with the attack. All three have been charged with first-degree murder.