The man, 30-year-old Prattville resident Damien Postma, was pronounced dead in the parking lot at the Speed C gas station on the West South Boulevard Thursday morning.
Investigators say witnesses tell them Postma approached the driver of a white semi-truck around 4:15am. The truck was stopped in the parking lot for possibly several hours.
A witness reported seeing Postma walk around the front of the truck to the rear where it was hooked to an empty trailer. Postma is said to have climbed under the truck, and at some point the vehicle started moving.
The driver, apparently not knowing anything was happening, pulled out of the parking lot and ran over Postma as he fell out of the carriage.
Anyone with details that can help investigators with this case are asked to call CrimeStoppers at 215-STOP or 241-2651.