Two people have died following four separate crashes on Geelong and Otways roads in just over an hour on Sunday.
A man and a woman died in a three-car crash on Bacchus Marsh-Geelong Road at the intersection of Birds and Sharkey Rds at Balliang just after 1pm.
Police said the man and woman were in separate cars during the crash and both died at the scene.
An air ambulance flew a boy to Royal Children’s Hospital with life-threatening injuries, police said.
A Royal Children’s Hospital spokesperson told the Indy on Monday morning the boy was in a stable condition.
Paramedics treated another man for non-life-threatening injuries at the crash site.
Major Collision Investigation Unit detectives had yet to determine the exact circumstances of the collision and their investigation was ongoing, police said.
Police appealed for witnesses or anyone with dash cam footage of the crash to phone Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au.
Another crash just over an hour later at Waurn Ponds threw a man from his car and left him fighting for life.
The man was driving a car that hit a power pole on Cochranes Rd about 2.15pm, with the impact throwing him from the vehicle, police said.
The man, in his 20s, sustained life-threatening injuries in the crash and paramedics airlifted him to Royal Melbourne Hospital, an Ambulance Victoria spokesperson said.
The man remained in a critical condition on Monday morning, a Royal Melbourne Hospital spokesperson said.
Meanwhile, a Chinese woman in her 60s was in a serious condition on Monday morning following a bus crash on the Great Ocean Road.
The bus veered off the Great Ocean Road and struck a tree about 1.55pm on Sunday at Glenaire, just past Apollo Bay.
An ambulance helicopter flew the woman in a serious condition to The Alfred and her condition remained serious on Monday morning, the hospital confirmed.
Paramedics treated 20 people on the bus, taking three to University Hospital Geelong and one to Colac Hospital by road, an Ambulance Victoria spokesperson said.
The remainder were transferred to nearby Apollo Bay to get on another bus, the spokesperson said.
And in the same hour a motorbike and a car crashed at the roundabout of Boundary and Fellmongers Rds at Breakwater, throwing the rider from his bike.
Paramedics treated the rider before taking him to University Hospital Geelong.
The two deaths brought the road toll to 225, up on 167 the same time last year.