ISIS sympathiser Saeed Noori - who mowed down pedestrians in Melbourne in 2017 while shouting 'Allahu Akbar' - has been sentenced to life behind bars.

Saeed Noori, 37, had previously pleaded guilty to one count of murder, 11 counts of recklessly causing injury and five counts of reckless conduct endangering life.

Noori was sentenced in the Supreme Court of Victoria on Thursday, and will spend 30 years behind bears before being eligible for release on parole.

Saeed Noori is seen exiting the Supreme Court of Victoria on Thursday, after being sentenced to life in prison with a non parole period of 30 years for the Flinders street attack

Saeed Noori was sentenced to life behind bars after killing an elderly man and mowing down pedestrians in Melbourne in 2017

The Afghanistan immigrant will be 60 by the time he's eligible for parole, after killing a grandfather and mowing down 15 pedestrians outside Flinders Street Station in December 2017.

Grandfather of three Antonio Crocaris, 83, suffered fatal injuries when he was hit and died eight days later.

Justice Elizabeth Hollingworth said it was 'sheer good fortune' that more people weren't killed or injured, Nine News reported.

'Some victims have likened the scene to a horror movie - one which keeps replaying in nightmares and flashbacks', the judge told the court.

He was arrested by off-duty police officer Francis Adams, who had just gotten off a tram nearby, with Noori allegedly calling out 'Allahu Akbar'

'Most of them either dread, or avoid, going back into the CBD, or to that particular intersection.'

Noori came to Australia from Afghanistan as a refugee in 2004 and is now an Australian citizen.

His lawyers previously claimed he suffered from schizophrenia and had fasted for seven days before the attack.

Police said Noori's computer and a USB stick contained a number of images from international terrorist attacks, videos about ISIS and other material that an expert said showed he had a 'degree of radicalisation'.

Noori was driven out of court in handcuffs, with his head in his hands.