Two dead and one injured in domestic violence incident

Police have arrested a man after two people were killed and another suffered head injuries at a home in Sydney’s south-west.

NSW police attended the Rosemeadow home at 1.30am (AEST) on Sunday following reports of a disturbance.

Officers found the bodies of a 64-year-old man with serious head injuries, as well as a woman in her 60s and a man in his 20s.

The bodies have not yet been officially identified.

Police said the victims were “attacked by a man they knew.”

NSW Ambulance paramedics treated the injured man at the scene and he remains in a critical condition.

An hour later, police arrested a 32-year-old man who arrived at the home in a silver sedan.

He was taken to Campbelltown Police Station.

Police have established a crime scene and are preparing a report for the coroner.