Three children were burnt beyond recognition at their home in Itireleng RDP houses in Bela-Bela, Limpopo.
Limpopo cops spokesperson Colonel Moetshe Ngoepe said it is alleged that the children were sleeping alone in a shack attached to the main house while their uncle was sleeping in the RDP house.
The shack caught fire morning at around 03:30 on Wednesday, and burnt a girl aged 8 and two boys aged 10 and 13.
He said the cause of fire is still unknown but forensic investigations will tell.
Ngoepe said the South African Police Service in this Province would like to condemn poor child safety in the strongest terms.