Police continue search for three men involved in multi-vehicle crash which killed two people in Sydney's south-west

Police are hunting for three men who were involved in a multi-vehicle car crash which killed two people near Liverpool in Sydney's south-west.

Transcript

00:00 A brother and sister were killed on their way home here at Sadler Avenue in Heckenburg

00:07 when a black Mercedes SUV collided head on with their Toyota Echo.

00:12 It happened around 9.20 last night.

00:15 The ABC understands that the 24-year-old woman had picked up her 15-year-old brother from

00:20 work, a job he'd only recently started, when they were hit and killed just metres away

00:25 from their home.

00:27 Police say the Mercedes then went on to hit another car which had been parked on the side

00:31 of the road and then flipped on its side.

00:33 It's alleged that three men then fled that scene in another car.

00:39 Neighbours who came out to help and called police say they saw the men leave without

00:44 even checking on the welfare of the brother and sister in the car which they had hit.

00:49 Police say that high speed was a contributing factor in this collision and the behaviour

00:54 of the three men is abhorrent.

00:57 Have police found the men inside that Mercedes?

01:02 No Meredith, police are still searching for those three men and appealing for them to

01:07 come forward.

01:08 An 18-year-old man has been arrested, he's the driver of the car in which those three

01:13 men had fled.

01:15 Police are calling for anyone with further information about this crash or any dash cam

01:19 footage to come forward.

01:21 [BLANK_AUDIO]