The Primrose police made a grisly discovery last Monday, when they were called out to an open field, close to Oak Avenue in Primrose.
The police were called to the scene by a passer-by who noticed a plastic bag in the field.
He stopped the car to investigate and found, what he believed to be, a baby.
The man called the police and when officers arrived, they found a plastic bag with what appeared to be a baby inside.
The baby looked as though it had been trampled.
The Ekurhuleni Emergency Services were called and personnel confirmed that it was a baby, but it had been an abortion, not a birth.
It is estimated that the foetus was between 12 to 20 weeks old when the pregnancy was terminated.
The Primrose police have opened a case of concealment of birth.