Victoria Police Saturday identified the man, who set a auto on fire and stabbed three people, killing one of them, before being fatally shot in the Australian city of Melbourne, as Hassan Khalif Shire Ali from Somalia.
The man was shot after confronting police officers on a busy city street, authorities said. The video also shows another individual, dubbed "trolley man", quickly barging in with a trolley directly hitting the attacker and stalling him to buy the police some time.
As the attacker's vehicle burst into flames, the man emerged and "engaged" with members of the public, Victoria Police Chief Commissioner Graham Ashton told reporters Friday.
A 61-year-old man later died at the scene, two other victims are in hospital, one is critically injured the other has minor injuries.
Authorities are treating the attack as a terrorism incident, Ashton said.
Police said that his improvised explosive device was made up of gas cylinders and some form of lighter and "certainly wasn't sophisticated".
According to them, the police initially responded to a report of a auto on fire near the corner of Swanston Street about 4.20 pm (10.50 am IST).
They had initially thought the man was running to catch a tram close by, before a nearby police vehicle rushed to the scene.
The counter-terrorism command has taken a lead role in the investigation, but police at first said there was no known link to terrorism and were investigating.
The spokesperson advised a "small number of people" have been stabbed and police are not seeking anyone further at this time.
"They are in a suspected critical condition", paramedics said. "Australians will never be intimidated by these appalling attacks and we will continue to go about our lives and enjoy the freedoms that the terrorists detest", he said.
Local media reports quoted 22-year-old Markel Villasin, who was finishing his shift at KFC on the Bourke St as the incident happened.
State Premier Daniel Andrews described the attack as "evil" but said the city would not be bowed. It is unknown whether it came from the vehicle or was police gun fire. One died later in the hospital, from the injuries sustained.
"A moment later, I heard a loud bang, to me it sounded like a gunshot", she said.
Friday's attack is a double blow for the city as it coincides with an ongoing murder trial of 28-year-old James Gargasoulas, who ploughed his auto into crowds in the same area in 2017, killing six people.
Australia has been on alert for such violence after a Sydney cafe siege in 2014, and its intelligence agencies have stepped up scrutiny, though police said there was no warning of the latest attack.