“Officers provided immediate medical assistance, and St John transported the man to hospital, where he remains in a moderate condition,” Loughrin said.
“His injuries are not believed to be life-threatening.”
He said a second person in the vehicle was taken into custody at the scene.
Loughrin confirmed no police staff were injured.
Loughrin said Ulster St remains closed from the Mill St intersection, and traffic is being diverted down Richmond St.
“Members of the public are advised to avoid the area, as road closures are expected to remain in place for several hours,” Loughrin said.
“We want to reassure the community that there is no ongoing public safety risk.”
He said a critical incident investigationhas begun, and the shooting will also be referred to the Independent Police Conduct Authority (IPCA), as is standard procedure.
Members of the public were earlier warned to avoid the area and expect delays.
A person at a motel directly across the street from where the shooting happened said a large police presence remains.
