The 47-year-old will remain behind bars after what police described as the "particularly violent" murder of the 46-year-old woman and his two sons aged 12 and 4.

NSW police called to home in Campbelltown where they arrested a man, aged 47

Police found the bodies of two boys, aged four and 12, and a 46-year-old woman inside a home in Campbelltown, Sydney.