Police were questioning seven teens about the beating and robbery of a 17-year-old high school senior in a Bridgeport alley that was captured on video and posted on the Internet.
In a brief statement, police said the attack did not appear to be racially motivated and that no charges have been filed.
The video -- posted on You Tube -- shows the 17-year-old victim coiled on the ground in the alley, pleading in vain for the youths to stop.
In the attack, which lasted for several minutes Sunday afternoon, the boy covers his face as the other youths surround him and push him into the snow while kicking and punching his head, his legs, his back.
The attackers yell that the boy had "(expletive) up."
"Hold on," the teen says as he pulls himself to his feet and tries to talk them into stopping.
But one of the attackers, wearing gray sweats, asks: "Do you (expletive) understand?" He then punches the boy in the face and knocks him to the ground, then kicks him in the face, sending the boy sprawling on the snow-covered ground.
One of the youths took shoes out of the victim's backpack, dangling one of them in front of his face in a taunt. They also took his wallet and $180 in cash, police said.
The boy was taken to Mercy Hospital and Medical Center, where he was treated for a laceration to his lip, bruises and abrasions, police said.
The boy is a senior at Curie High School on the Southwest Side, according to a Chicago Public Schools spokesman.
Tribune reporter Jeremy Gorner contributed.Copyright © 2015, RedEye