Major Collision Investigation Unit detectives are investigating following a fatal collision in Daylesford on Sunday.
Emergency services were called to reports a BMW SUV mounted the kerb and struck a number of patrons on the front lawn area of a licensed premises on Vincent Street just after 6pm.
Two men and a woman, as well as a child, died at the scene.
A female child was flown to hospital where she later died.
A male child was flown to hospital with critical injuries.
A man and a woman were transported to hospital with non-life-threatening injuries.
A male child was also taken to hospital with non-life-threatening injuries.
All the victims are yet to be formally identified.
The driver of the BMW, a 66-year-old Mount Macedon man, was taken to hospital with non-life-threatening injuries.
The exact circumstances surrounding the collision are yet to be determined and investigations remain ongoing.
Anyone who witnessed the incident, has CCTV, dashcam footage or any other information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at