Yesterday's attack saw 31 year old Mohammad Khalif drive his vehicle into the busy street where it was set alight.
But he was also assessed by authorities as not being a domestic threat.
"I've been very open about the cancellation of visas, the numbers have ramped up, because there are some people should not go on to become Australian citizens", he said.
"You always looked after us like family".
Hassan Khalif Shire Ali, 30, fatally stabbed one man and injured two others after fire-bombing his auto in Bourke Street on Friday. He had been born in Somalia, and had come to Australia in the 1990s.
Islamic State (IS) said via its propaganda arm that Shire Ali was an "Islamic State fighter and carried out the operation", but provided no evidence to back its claim.
"The judgment made about this individual was that he was not in the planning stage of the attack", Dutton said from Brisbane on Sunday.
"He is finding it very hard".
"I know there's been a bit of talk about renaming the lane, renaming Crossley Lane, I think that's a fantastic idea and I would fully support that", Mr Andrews told reporters.
Dutton pleaded with anyone who had information on suspicious behaviours to continue to come forward, and thanked members of the community who previously had acted.
Dutton said encryption technology makes it hard for authorities to gather intelligence.
Prime minister Scott Morrison has doubled down on his demands that Islamic religious leaders do more to "root out" radical views within their communities in the wake of the Melbourne terror attack.
THE staff of an iconic Melbourne cafe are in mourning today after a veteran of Melbourne's cafe culture has been named as the victim of Friday's brutal stabbing attack in the CBD.
"We'll have to wait for all of that detail, but what we do need is people from the community to provide information".
"People [like] I see comments from Anne Aly this morning who want to deny there's a problem or suggest that this is not the problem people make it out to be - of course it is", he said.
A 26-year-old and a 58-year-old were taken to hospital with non-life threatening injuries.
Desperate efforts were made at scene to save Mr Malaspina by emergency workers, according to Markel Villasin, who worked at a KFC on Bourke Street, but he died at the scene.
Meanwhile more than Aus$50 000 (US$36 000) has been raised on GoFundMe for a bystander dubbed "trolley man", who was hailed as a hero for trying to stop Shire Ali by knocking him over with a shopping cart.