Australian child welfare authorities have removed two foster children from the home of a convicted triple killer, months after being notified of the individual's criminal history.

Reginald Arthurell, who served approximately 39 years in prison over three decades for the murders of his stepfather, a sailor, and his fiancée, had been caring for the foster children before authorities intervened.

Officials acknowledged that the children remained in Arthurell's care for several months after authorities were first notified of the situation. The delay in removal has prompted criticism of the child welfare system's response procedures.

Australian authorities have since issued an apology, describing the situation as "entirely unacceptable" and "terrible." The incident has raised questions about background check procedures and oversight mechanisms within the foster care system.

The children have now been placed in alternative care arrangements. Authorities have not disclosed additional details about the timeline of events or specific circumstances that led to the initial placement.