Three children are dead and a man is in custody after a horrific house fire in Sydney west.
Emergency services were called to the home in Lalor Park at 1am on Sunday.
Two boys, aged 2 and 4, were taken to Westmead Hospital in a critical condition but died a short time later.
The body of the third child, believed to be a 10-month-old girl, was found after Fire and Rescue NSW extinguished the fire.
Four other children were treated at the scene by paramedics.