Police are investigating the murder of a trucker found slain inside his rig in Alabama on Wednesday.

The incident occurred on May 16th at around 11:30 a.m. at the Citgo gas station located at 1101 Bankhead Highway in Birmingham, Alabama.

According to AL.com News, police responded to a call reporting an unresponsive person inside a semi truck in the parking lot of the Citgo. The trucker was pronounced dead on scene.

Initially, police considered the type of death “unclassified,” but released a report on Thursday classifying the death as a homicide, but with no details regarding the actual cause of death.

Then, early Friday morning, the victim was identified as 55-year-old African American trucker Derry S. Anderson from Ohio.

The incident is still under investigation and anyone with information regarding the homicide is urged to call the Birmingham police department at (205)-254-1764, or Crime Stoppers at (205)-254-7777.