This is what we know so far about what police have described as a lone-operator terror attack on Bourke Street, which brought Melbourne's CBD to a standstill.
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The attack
About 4.20pm, a blue utility mounted the footpath on Bourke Street, near the corner of Swanston Street, and erupted in flames. A man now identified as Hassan Khalif Shire Ali got out of the vehicle.
He attacks pedestrians, fatally stabbing Pellegrini's co-owner 74-year-old grandfather Sisto Malaspina.
It is believed he then attacked 58-year-old Rodney Patterson and a 24-year-old security guard.
Patterson had a head injury and the security guard had a neck injury. Both of them are in a stable condition.
Transit police arrived and Shire Ali punched one of them through a police car window.
The two police officers began to engage with him as police flooded the scene.
Shire Ali then produced a knife and lunged at the police officers.
A bystander tried to assist police by ramming a shopping trolley between them and the suspect.
Shire Ali was then shot by police in the chest and fell to the ground.
He was taken to hospital under police guard in a critical condition and later died.
Police have said it was a lone-person terror attack, and that the threat has been mitigated.
An hour after the attack, the block of Bourke Street between Russell and Swanston streets was evacuated and the city's warning system was used for the first time.
The streets remained closed until about 8am on Saturday.
The perpetrator
Police have spoken to Shire Ali's wife, parents and siblings.
His family's home in Werribee and the property where he lived in a backyard bungalow were raided by police on Saturday and combed for evidence.
Shire Ali was known to counter terrorism agencies.
His passport was seized in 2015 when he made plans to travel to Syria.
He was known to have radical views.
He was originally from Somalia, and police said he arrived in Australia in the 1980s as a child.
The city this weekend
There will be increased police presence in the CBD and at sporting events and gatherings over the weekend, including the racing at Flemington and Remembrance Sunday ceremonies.
Police Chief Commissioner Graham Ashton said police had spoken with the man who tried to help police with a shopping trolley, dubbed “trolley man”.
The Victorian state election campaign has been suspended until noon on Sunday.
The police have been given the green light for the first time to use preventative detention, where they may detain terror suspects for four days without a court order.
Police are still appealing for anyone with footage to come forward.
It is normal for people to have strong emotional or physical reactions following a distressing or frightening event. People can seek help and advice by visiting your local doctor or calling Lifeline 13 11 14, GriefLine 1300 845 745, or beyondblue 1300 224 636.
