Police say they are investigating whether the 66-year-old suffered a medical episode behind the wheel.
Five people, including two children, have been killed and several others injured after a car crashed into a beer garden in regional Australia.
The incident occurred when an SUV mounted a curb and struck customers outside a pub in Daylesford, about 110km northwest of Melbourne, on Sunday evening, police in Victoria state said on Monday.
Four people died at the scene, while a girl died in hospital after being flown to Melbourne for treatment, police said.
Five other people, including an 11-month-old boy, are being treated in hospital for injuries.
Victoria Police Chief Constable Shane Patton said the car collided with a “large number of people” at tables outside the pub.
“It’s one of the most confrontational scenes, I’m told, experienced officers have been in,” Patton said at a news conference.
Patton said police had not yet spoken to the 66-year-old driver of the vehicle while he was being treated at hospital and the cause of the incident was still unclear.
He said the driver had undergone a breath test and had no alcohol in his system, and police were investigating all possibilities, including the possibility that the driver had suffered a medical incident behind the wheel.