The women allegedly left the restaurant and then came back with a handgun.
According to authorities, the gunman is a disgruntled former security guard who was fired from his job at the mall.
They were all employees at the Molson Coors brewery.
The Pakistani military said in April 2017 that Ehsanullah Ehsan had voluntarily turned himself in.
Video footage of the chaotic scene showed a massive police response, including SWAT teams and snipers positioned on nearby roofs.
Police are describing the incident as a terrorist attack.
The masked man can be seen lying on the ground with blood around him.
Police are attempting to negotiate with the shooter or shooters but the situation is being described as "very active."
"People have been looking at me longer than usual, and I wonder: are they looking at me because they feel sorry for me? Or are they looking at me because they agree with what that man did?"
In 2015 I started reporting from Reclaim Australia rallies. That movement has now reached a tragic culmination in New Zealand.
"This isn't an individual act, this is organised," he said, suggesting anti- Islamic violence has become entrenched throughout the West.