The body of the unknown man was found on the shoulder of the road by a passerby, at about 7.30pm, on October 2.
Investigators believe he was struck by a car, because they found broken pieces of glass and debris on the scene.
Investigators are now asking anyone who may have witnessed the incident or have information that can help them to identify the body to come forward.
The body is described as that of a middle-aged man, who was wearing blue jeans, a black leather jacket, a yellow T-shirt and black sandals.
Anyone with information can contact the investigating officer Det W/O Ben Olifant on 011 916 7000.
q Below is a breakdown of the arrests made by the Reiger Park SAPS between October 17 and 24:
Theft: 10
Malicious damage to property: 5
Assault GBH: 9
Possession of illegal substance (drugs): 9
Assault Common (domestic violence related): 2
Housebreaking: 1
Robbery: 1
Murder : 2
Dealing in liquor without a licence: 3
Possession of suspected stolen motor vehicle: 1
Drunk and driving: 2
Reckless and negligent driving: 1
Perjury: 1
Sexual Assault : 1
Possession of live ammunition: 1
Theft out of motor vehicle: 2
