Chicago police were questioning six people Tuesday about a vicious beating of 17-year-old teen that was videotaped and posted on YouTube.

According to CBS 2 and The Chicago Tribune, the attack occurred Sunday afternoon behind an elementary school just south of Chinatown at 4 p.m. Police are looking for two more suspects and the six in custody will be charged soon.

We're pretty confident that we've got the makings of wrapping this thing up, Police Supt. Carry McCarthy told CBS. Although the boy appears of Asian descent, he said the attack was not racially motivated but was retaliation for an earlier incident that include 20 people ganging up on two teens.

The YouTube video shows the teen being kicked to the ground by a gang of boys in hoodies shouting racial slurs. After over three minutes, he eventually escapes and the other teens chase after him.

The teen was treated and released for minor injuries, and police say the assailants stole about $180.

In an unreleated press conference, Mayor Rahm Emanuel said the incident is a wake up call for all of us, according to NBC Chicago.

It's become a big deal because of the video,'' police News Affairs Officer Daniel O'Brien told The Chicago Tribune. The video, which contains strong language, is below: