According to police, around 10:00 p.m. officers were flagged down by a bystander in the 2500 block of West 63rd Street because a person was laying on the sidewalk unresponsive.
The person was found with a gunshot wound to the neck and pronounced dead at the scene, police said.
RAW VIDEO: Police investigating after person found shot in neck on sidewalk in Chicago Lawn
The victim is listed as John Doe but is believed to between 14 and 20 years old, according to police.
The Cook County medical examiner's office has not released any further details about cause of death at this time.
Area Central detectives are investigating.