Police were informed on Friday morning of an outburst of stab wounds near a shopping center in the town of South Hedland.
The suspect, in his early 30s, was armed with a large knife. He allegedly first attacked a man seated in a vehicle before entering the mall.
He then slashed six other people inside the premises, as well as two police officers.
One of the victims was a young woman, who was stabbed while pushing a baby in a stroller.
Dawson said one of his officers “barely escaped serious injury” in what the police described as a “confrontational and dangerous” outburst.
“It was a very dangerous [situation]. And the actions and decisiveness of these two officers, I believe, did not cause any additional injuries, “said Dawson.
David J Derschow told CNN that his girlfriend Esther Brooks was injured in the attack.
“I started to hear screams coming from the entrance where she [was supposed] to go out and I went to see if it was [safe] but people and children are exhausted, “he said.
“I saw my partner go out. I asked what happened and she just asked if she had been stabbed and of course she was. “
Brooks was taken to hospital and was then discharged after receiving stitches. She has since given a statement to the police.
Police said the attack was not supposed to be motivated by political or ideological reasons.