Police are investigating the sudden death of a 5-year-old boy at a home in Grafton, New South Wales. The boy is found unresponsive at the residence and homicide detectives become involved as authorities seek to determine what caused his death.

ABC Australia reports that a post-mortem examination is planned to establish the circumstances and cause. Other outlets describe the inquiry as a major police probe and note that the case is being handled by specialist homicide investigators. While details about possible causes have not been publicly confirmed across reports, all sources indicate the death is being treated seriously and is under active investigation.