A man and a woman have been injured after being struck by a car at Ingleburn on Friday.
Emergency services were called to the intersection of Harold and Oxford streets, Ingleburn, about 7.30am after two pedestrians were struck by a black Ford Focus sedan.
A woman, aged in her 40s, was treated at the scene by NSW Ambulance paramedics before being taken to Liverpool Hospital, where she remains in a serious condition.
A man, also aged in his 40s, sustained minor injuries.
The driver and sole occupant, a woman also aged in her 40s, was uninjured.
She was taken to Liverpool Hospital to undergo mandatory testing.
Officers from Macquarie Fields Local Area Command have established a crime scene and police from the Crash Investigation Unit will be investigating the circumstances surrounding the incident.
Police would like to speak to any person who witnessed the crash, and are especially interested in anyone with dash cam vision of the incident to contact Macquarie Fields Police or Crime Stoppers on 1800 333 000.