Police identify the victim as 53-year-old Willie Wilson of Florissant
The Missouri Highway Patrol says 62-year-old Thomas Dmytryk was crossing Wentzville Parkway near Meyer Road when he walked in front of a vehicle and was struck.
The driver is not expected to be charged.
Illinois State Police say suspects also accused of ramming St. Louis city police car.
Crash happened at 1:15 Saturday morning.