Baby boy's death sparks WA homicide investigation

Homicide detectives are investigating the death of a one-year-old baby boy at a home in Golden Bay on Sunday.

The boy is the same baby allegedly assaulted in the Wheatbelt town of Narrogin in October last year, according to WA Police.

A Mandurah man was charged with grievous bodily harm over an alleged incident last year after a baby boy was taken to Narrogin Regional Hospital for treatment before being transferred to Princess Margaret Hospital and later released.

In a brief statement on Monday night, WA police said officers attended the Golden Bay residence south of Perth after the baby's death and an investigation was ongoing.

- with AAP