It is suspected that Patrick attacked Christa September, 28, and her children in a fit of rage after she tried to leave him.

Cape Town - A frightened three-year-old girl has revealed how she stood behind a curtain to hide from the man who bludgeoned her mom and brother to death.

The girl also saw how the alleged killer committed suicide afterwards by hanging himself.

The little girl is the only one who escaped unharmed from the tragedy that played out in a tiny shack in West Side, Villiersdorp, on Sunday.

Her younger sister, also three, whose head was hit with a hammer, survived the attack but was transferred to Red Cross Children’s Hospital where she underwent an operation on Tuesday.

Grandmother Cecilia Hector said the uninjured girl told them how she hid behind the curtain when her mother Christa September’s boyfriend Patrick Naphai allegedly forced his way into their house and started attacking Christa.

“She says he stabbed Christa while she lay on the bed and then beat her against the head with a hammer,” said Hector.

“She says he also beat her sister and brother against their heads and across their tiny bodies with the hammer before hanging himself.”

Hector said her daughter “knew Patrick was going to kill her”. “She just didn’t know when.”

Christa and her kids, none of whom are Patrick’s, went to Worcester over the weekend to visit her family and returned home on Sunday.

Her sister Joyce September, 33, said Christa had an interdict against Patrick and wanted to dump him “because he was abusive and made her feel like a prisoner”.

Hector and her sister Sophia Sykes, 60, discovered the bloodbath on Sunday night after Christa didn’t answer her phone.

When they arrived they heard the girl cry: “Mammie is dood” (Mommy is dead), and Sykes broke down the door.

Red Cross Hospital’s Angelique Jordaan said on Tuesday night that the injured girlwas in a critical condition.

Police are investigating a case of murder, attempted murder and an inquest docket has been opened.