CHICAGO — A teenager has died after he was struck and killed on the Eisenhower Expressway following a carjacking.

Police say the teen boy was hit around 12:40 a.m. Friday in the westbound lanes of the expressway near Ashland Avenue.

According to Illinois State Police, troopers located a stolen silver Chevy Impala on the left shoulder of the expressway, about four miles from Ashland. Police say the teen was exiting the vehicle, when he was fatally struck by a passing vehicle.

A woman at the scene, D’Anjamo Mosby, identified herself as the deceased teen’s mother, and says his name was Demetrius Stewart. Mosby told WGN the 15-year-old was a student at Chicago Bulls College Prep.

The vehicle was stolen from a woman in the 1500 block of S. Christiana around 11 p.m. Thursday. Chicago police say the 29-year-old woman was outside the vehicle when an unknown male, among a group of three, approached and pointed a gun at her. 

The woman dropped the keys to her car on the ground while the three men then retrieved them, entered her vehicle and fled. She was not injured. 

Another teen boy is currently being detained by Chicago police for further investigation. No charges have been filed yet.

An investigation is underway.

The outbound lanes of the Eisenhower near Ashland reopened to traffic around 8 a.m. Friday.

This is a developing story. Check back for details.