Illinois State Police and the St. Clair County Coroner's Office are investigating a fatal crash Monday night on eastbound Interstate 64 near Mascoutah.
St. Clair County Deputy Coroner Curtis Schildknecht said the three-vehicle crash that occurred at mile marker 22 resulted in one death.
The name of the victim was not released pending notification of family members.
Eastbound I-64 closed for several hours Monday as emergency crews investigated the crash.
Further details were not immediately available.