A fight broke out inside a Westfield shopping center in Perth, Western Australia, on Friday afternoon.
A man suffered facial injuries during the brawl, which was witnessed by a number of people.
The assailant then boarded a bus and fled the scene.
The police did not make any arrests following the incident. A spokesperson said that a knife was secured at the scene, and they were still looking for the other suspect.
There were no further threats to the public. According to reports, the incident happened in the Myer department store.
People were reportedly told to stay quiet as the store was locked down.
The police asked people in the mall to be aware of their environment and report any suspicious activity.
Multiple ambulances were sent to the area. The police had earlier warned the public to stay away from the mall.
However, they noted that the situation no longer posed a threat.
The police noted that the situation no longer poses a threat to the public.
It follows a fatal stabbing incident that occurred at Westfield Bondi on April 13.
Six people died, and 12 others were injured due to the attack.
Among those who died were Jade Young, Dawn Singleton, Faraz Tahir, Ashlee Good, and Pikria Darchia.