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Emergency vehicles can be seen outside the shopping centre as the police operation continues[/caption]
In an event that caused panic at a Sydney mall, many people—including a nine-month-old baby—were reportedly stabbed, and a man was also shot.
At Bondi Junction, crowds were seen escaping the Westfield shopping mall, where reports from the local media indicate four people have died.
Following allegations of stabbings, police shot a guy shortly before 16:00 local time (07:00BST; 08:00GMT). Following this, they declared a critical incident.
The area is advised to be avoided as the event is still underway.
Video footage showed dozens of police and ambulance vehicles at the scene, and images on social media appear to show multiple casualties, as well as a man carrying a large knife.
New South Wales Ambulance told news agency AFP one man, believed to be an attacker, was shot dead by police.
One eyewitness told Reuters news agency they saw someone lying down injured and were looking to see what was going on.
"Then we saw all these people running towards us and then we heard a shot and my husband dragged us into the Adairs shop and then we got the lady there trying to lock the doors and then she couldn't lock the front door so we went in the office which was all locked and then we were in there until the police came to get us."
Another said they saw a woman lying on the floor, adding: "But it's just, it was insane it was insanity, I wasn't expecting it."