On Tuesday morning, police arrested a woman who lived in the house where the four new-born infants were found, one in the freezer compartment of a fridge and the other three in a freezer, as she admitted to knowing that they were there.
Police spokesman Colonel Mzukisi Fatyela said the suspect further claimed that the babies had been there for a long time and that they were her children.
The home owner, the mother of the suspect, does not live at the house and police do not have evidence that links her to the investigation at this juncture.
However, she did answer questions posed by police on Monday evening as her daughter was still on the way back from a funeral she attended in Johannesburg at the weekend.
Police broke into the house after receiving a tip-off over the weekend. Because the infants were so thoroughly frozen, police have been unable to identify sex, but estimated that the babies were all between one and two months old.
A post-mortem is being conducted to determine sex, age as well as whether the babies died as a result of being put in the freezer or if they died beforehand from other injuries.
Fatyela said they would also not speculate on whether the babies were being preserved for muti purposes and that the motive would be revealed through investigations.