A man died in hospital after an alleged assault on Eastern Creek this morning.
Emergency services were called to a residence at Cable Place shortly before 1 am Sunday and found the man, aged 34, seriously injured in the head.
As paramedics began to resuscitate the casualty, officers from the Mt. Druitt Police District Command arrested a 34-year-old man at the scene.
The injured man was taken to Westmead Hospital, where he died recently. the second man continues to assist the investigators at the Mt Druitt Police Station.
A crime scene has been established at home and investigations are ongoing into the circumstances that led to the alleged assault.