The state police agency is investigating after a body found Friday along Interstate 40 near the Arkansas 365 exit in the Morgan area.
Pulaski County sheriff's spokesman Cody Burk said deputies were notified about the body of a man at 10:30 a.m.
Special agents with the Arkansas State Police will lead the investigation, according to a news release.
The body has been transported to the state Crime Laboratory, where it awaits a determination of the manner of death.