Witnesses inside the Westfield Bondi Junction shopping mall when the attack took place have described scenes of chaos.
CNN’s Australian affiliate, 9 News Sydney, spoke to an eyewitness who said people were running through the shopping center and falling over each other, describing the situation as “pandemonium.”
Two brothers who were there told 9 News they saw a baby and mother stabbed and tried to help.
“The baby got stabbed and the mum got stabbed," one of the brothers said.
“We were holding the baby and trying to compress the baby. Same with the mother, trying to compress the blood from stopping.”
One man described seeing a man in a green shirt stabbing others "indiscriminately."
"[We just heard] screaming, screaming and it didn't seem that long before we heard 'boom boom boom' of the gunshot and we thought, 'We hope it's the police,'" the witness told Australia's state broadcaster ABC.
"[A person] is dying 10 metres away … I grabbed towels and there were three people dying around me.
"It was just carnage."
Another man who did not give his name told ABC that the attacker would have continued his deadly rampage if the police officer had not intervened.
"If she did not shoot him, he would have kept going, he was on the rampage," he said.