A trauma response team was sent to the Thornwood house where the incident took place last weekend.
It is claimed that a 21-year-old man stabbed his mother, girlfriend and three-month-old child before committing suicide.
His two-year-old daughter survived but is followed in the hospital.
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Ncumisa Ndelu from the department says that they will not make any hasty decisions regarding keeping the child safe because they have chosen their well-being as a priority.
"The first task for the team is to ensure the well-being of the two-year-old." The MEC has also instructed that they are looking for the family of the girlfriend, the wife had a brother who lived in the area, who is the uncle of the deceased so they offer help, "said Ndelu.