Major Collision Investigation Unit detectives are investigating after a man died in hospital following a crash in Wantirna South yesterday afternoon.
It's believed the vehicle was traveling on Stud Road when it crashed into a concrete pole just after 1.30pm.
The driver, a 66-year-old Bayswater woman, was taken to hospital with serious injuries.
Her passenger, a 73-year-old Bayswater man, sustained critical injuries and was transported to hospital where he sadly passed-away this morning.
A second passenger, a 68-year-old Bayswater woman, sustained non-life-threatening injuries and was also transported to hospital.
Detectives continue to investigate the circumstances surrounding the crash.
Anyone who witnessed the crash or with dashcam footage is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au.