Citing police dispatch reports, the incident occurred around 2:54 a.m. near the intersection of (2900) North Racine Avenue and (1200) West George Street.
Four males, with their mouths covered with T-shirts, robbed several victims of their cell phones and gold chains, said police.
The initial police dispatch report described all four offenders as black males.
However, subsequent information suggested at least one of the thieves is a Hispanic male who was wearing a black T-shirt with gold lettering on the front.
According to preliminary information, no weapons were seen during the robbery and there were no reports of any injuries.
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