A man was found dead in Zondi, Soweto on Tuesday, police said.
Warrant Officer Kay Makhubela said the body was discovered by a passer-by in the veld.
"He was shot in the back of the head. We suspect he was killed in the early hours of this morning."
The victim was in his 50s. Police were still trying to identify him.
"There was no wallet or cellphone. So, we cannot rule out the possibility that it could have been a robbery," said Makhubela.