UPDATE: Police tonight have confirmed a fourth person has passed away following this afternoon's horrific events in Melbourne's CBD.
Police earlier this afternoon confirmed that a child - believed to be an infant - is one of the people killed after a man deliberately drove into pedestrians in congested Bourke Street, in the heart of Melbourne. Two others are believed to be a man and a woman in their thirties. The victims are believed to be unrelated.
All fatalities are reported to have occurred in busy Bourke Street.
The incident, which police insist is not a terrorist act - saw at least 31 people injured as the speeding car ploughed through people enjoying their lunch hour. Latest information has it that the driver was already known to police.
“Police shot the man who was the sole occupant of the vehicle and he received bullet wounds," reads a police statement.
“Police understand the incident is linked to a stabbing that took place in Windsor early this morning (20 January) involving parties known to one another."