About 11.10 am (Friday 9 February 2024), emergency services were called to Avoca Street, Randwick, near Eulalie Avenue, following reports of a multi-vehicle crash.
Police arrived and found one vehicle had mounted the kerb and collided with a pedestrian and sideswiped a vehicle, before colliding with a tree.
NSW Ambulance paramedics treated a 30-year-old female at the scene before being taken to St Vincent's hospital in a serious but stable condition.
A 44-year-old male was also treated and taken to St Vincent's hospital in a stable condition.
Officers from Eastern Beaches Police Area Command and the Metropolitan Crash Investigation Unit re investigating the circumstances surrounding the crash.
As inquiries into the incident continue, police urge anyone who witnessed the crash, or has dash-cam footage, to contact Eastern Beaches Police or Crime Stoppers on 1800 333 000.