CHICAGO (CBS)– A carjacking in Lawndale and traffic stop on the Eisenhower Expressway ended with one person dead early Friday morning.

Chicago police said the incident started as a carjacking just before 1 a.m. State police then pulled over a vehicle, with at least two people in it, that was reported stolen near Ashland.

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One person was arrested. Another person in the car ran into to traffic and was fatally hit by a car.

Outbound traffic was being diverted at Ashland and Paulina, causing delays for hours. All lanes have been reopened.

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Police said at 11 p.m. Thursday, in Lawndale, a 29-year-old woman was approached by three men with a gun. She dropped her keys and the men drove off with her car. The car was a silver Chevy Impala, the same car seen on the Eisenhower Expressway.

Chicago police said they have one male juvenile in custody.

A woman on the scene told CBS 2 the person struck by the vehicle was her son and he was 15 years old.

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This is a developing story.