DU QUOIN — A death investigation is underway in Perry County after two Du Quoin men were discovered dead in the Walmart parking lot early Sunday morning.

Du Quoin Police responded to Walmart just before 1:30 a.m. Sunday after getting a report about two people found unresponsive. When officers arrived, they found 41-year-old Jeremy W. Sizemore and 41-year-old Jarrod W. Sizemore dead inside a vehicle. The cause of death is not known at this time.

The investigation is being conducted by the Du Quoin Police Department, the Perry County Sheriff’s Office, the Perry County Coroner’s Office, Illinois State Police Crime Scene Investigators, and the Perry County Ambulance Service.