An 83-year-old victim of the Flinders Street attack has died in Melbourne overnight.
Northcote man Antonios Crocaris was on crowded Flinders Street in Melbourne on 21 December when a number of pedestrians were run over.
After more than a week, he died on Friday evening at The Alfred Hospital.
He is being remembered by family as "a friend to all, and a proud citizen of Australia".
"Our father Anton had his life cruelly taken away in a senseless act of violence," the family said in a statement.
"These circumstances are devastating to our family. Dad is simply irreplaceable and we will never fully recover from this loss."
The family thanked the people of Melbourne, first responders who treated Mr Crocaris and others, and the staff of The Alfred Hospital Intensive Care Unit.
Police have charged 32-year-old man Saeed Noori with 18 counts of attempted murder and one count of conduct endangering life, and are expected to upgrade one of those charges to murder.
The man is the first person to have died as a result of the attack while 19 others have been treated, six of them remaining in hospital.
One of those injured was a New Zealand citizen.
Police say they are working through an extensive witness list, and witnesses who have not yet been contacted are being asked to remain patient.