UPDATED 06/15/11 1:19 p.m.

CHICAGO (CBS) — Police are looking for a group of as many as seven robbers who attacked a 15-year-old boy in the West Loop.

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The victim was attacked and beaten around 6:30 p.m. Tuesday near Clinton and Monroe streets. He did not require hospitalization.

One of the attackers was armed with a handgun, and demanded the boy’s money, police said. A second teen struck the victim on the back of his head.

The group got the boy’s cell phone, cash and a bus card, police said.

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Police are asking that anyone who may have seen the robbery and can provide a description of the offenders call Belmont Area detectives. Additionally, if anyone sees someone matching the description of the suspects, they should call police.

The offender with the gun was described as a black male with a dark complexion, about 19, 6-foot-1 and 170 pounds with brown eyes and black hair in dreadlocks.

The offender who struck the boy in the head was described as a black male between 15 and 18 with brown eyes and black hair, also in dreadlocks. He is about 5-foot-11 and 150 pounds, and was wearing dark blue jean shorts and a T-shirt that had the word “ENYCE” in rhinestones, Mirabellli said.

No one was in custody as of late Wednesday morning.

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The Sun-Times Media Wire contributed to this report.