There is new information about the crash that killed four people on Interstate 55 near Hamel, Ill.
Illinois State Police said Mohamed Yussuf Jama, 53, of Colorado was the driver of a truck that crashed into several vehicles.
Police said he was driving the tractor-trailer when it crashed into vehicles that had slowed for a construction zone last week.
Four young women died from their injuries in the crash: Hailey Bertels, 20, and Madisen Bertels,17, of Staunton and Tori Carroll, 20, of Alhambra and Vivian Vu, 19, of Joplin.
The investigation is ongoing.