Major Collision Investigation Unit detectives are investigating after two people were killed following an incident in Wantirna yesterday evening (24 September), Victoria Police say.
Police and emergency services were called to the intersection of Boronia Road and Amesbury Avenue following reports of a collision between a motorbike and an Audi just after 10pm.
A short time later, it is believed a female pedestrian was struck by a Honda Prelude as she attempted to render assistance.
The pedestrian, a 27-year-old Wantirna woman, and the motorcyclist, a 37-year-old Wantirna man, died at the scene.
The 50-year-old male driver of the Audi, and his 47-year-old female passenger, both from Wantirna, were uninjured and stopped to assist.
A 32-year-old Boronia man, who was the driver and sole occupant of the Honda, was also uninjured and stopped to assist at the scene.
Investigators spoke to all parties at the scene and the investigation is ongoing.
Anyone who witnessed the collisions is urged to contact Crime Stoppers.