The shooting occurred about 8:20 p.m. in the 9500 block of Campbell Avenue, according to a statement from Oak Lawn police.
Responding officers found an 18-year-old man with a gunshot wound to the abdomen, police said. The victim underwent surgery at a local hospital and is listed in stable condition.
Investigators found three 9mm shell casings on the street and were able to identify a suspect who had fled the scene by the time officers arrived.
A 16-year-old Orland Park boy was arrested hours after the shooting, police said. He has been charged as an adult with aggravated battery with a deadly weapon and attempted first degree murder.
Police continue to investigate and are trying to identify and located other persons of interest.