A man pulled a woman from her car and held a gun to her head before fleeing in her car yesterday afternoon.
He then crashed into a second car and pointed his gun at the head of its driver before being shot by police.
Assistant Commissioner Richard Chambers said support was being offered to both motorists, who had described the ordeal as one of the worst days of their lives.
The Auckland chase started when the Eagle helicopter spotted a white BMW that had been stolen from the Youth Garage car yard, being driven erratically.
"Again we saw the offender holding a firearm to the head of a member of the public," Chambers said.
Police shot and injured the gunman, allowing the member of the public to escape.
Officers then gave first aid to the offender, who was taken to hospital in a serious but stable condition.
"My staff have done a remarkable job today and I acknowledge the courage they showed," said Chambers at a press conference this afternoon.
He said those who were involved in the shooting were not from the specialist armed offenders' squad.
"They've done a remarkable job today to take [on] someone presenting a real risk to members of the community."
He described the events as "volatile, high-risk and dangerous".
"Police staff make every effort to make sure members of the public are safe, we are safe. At a busy place like an intersection that is a challenge but my staff have done very well today."
Chambers said the man at the centre of yesterday's shooting had been a "person of interest" and wanted by police "for some time".
He appealed for footage from bystanders to help with the investigations.
Chambers said staff were looking for another person who may have been involved in stealing the BMW from the yard.
Police had been concerned he was going to use the high-powered weapon against people.
"Sadly, as a result of what occurred last night, he lost his life," said Chambers, adding his staff had done their best to save him.
Chambers said the dead man had fired on police at least five times.
Independent Police Conduct Authority investigations are under way into both shootings, he said.
Chambers said the situation in both Auckland and Hamilton had been traumatic for police.
Earlier report: Auckland shooting
One person was seriously hurt and another has moderate injuries after witnesses on Church St East in Penrose reported hearing gunshots before 11am yesterday.
Witnesses have described seeing a "largely built man" speed through Ellerslie in a white BMW X5 with no plates, before it crashed into a kerb on Great South Rd in Penrose.
The man leapt from the BMW and ran straight towards a motorist waiting at the nearby traffic lights, a witness called Steve said.
Pointing his pistol at the female driver, he then pulled her out of the car, said Steve, who didn't wish to give his last name.
The woman appeared to kneel on the ground with her hands on her head as the man carjacked her Suzuki and threw a "wild" U-turn before speeding towards a State Highway 1 on-ramp.
Police had their weapons trained on the man but appeared unwilling to fire with innocent bystanders nearby, Steve said.
"They didn't shoot, which is a good thing given how tightly packed cars are at that intersection."
A worker at Youth Garage said two people had been involved in the theft of the BMW.
"A lady came in first, tried to be like a customer, checking around," Dali Hou said.
"Then she came back again, checking cars again. I think about that time she stole our key and then she went out again and a guy came over and just drove it out … yeah, teamwork."
Hou wasn't at the car yard when the theft happened but had spoken to the yard's director who had tried to stop the man leaving in the BMW, and had to move to avoid being struck.
No weapons were presented by either the man or woman, Hou said. He had been told they were aged in their 30s or 40s.
The BMW then hit a kerb at speed, at which point it "caught air", the witness said.
The car's airbags deployed and police were able to capture a "large-build man", who had been driving, the witness said.
Unconfirmed reports allege the BMW may have been stolen from a dealership.
St John said they were called at 10.59am.
One person was seriously hurt and taken to Auckland Hospital, while a second patient was taken to Middlemore Hospital with moderate injuries, a spokesman said.
Sonia saw the police chase while pulling up to the lights at the Z petrol station on Great South Rd.
The man appeared to be holding a pistol, she said.
SH1 LINK TO SOUTH EASTERN HWY CLOSED - 11:55AM Due to a police issue on Great South Rd the link from SH1 (Southbound) to South Eastern Hwy (Westbound) is now closed. The eastbound link remains open. Allow extra time for diversions in the area: https://t.co/aRkL4HkBFr ^TP pic.twitter.com/XFqIACuI94
— Waka Kotahi NZTA Auckland & Northland (@WakaKotahiAkNth) July 15, 2021
She was worried the man with a firearm might run through the petrol station.
Her first thought had been to "get out of there" and get home to her children, she said.
She also saw a number of cars U-turn from the area to try to get away. She also reversed away from the area and travelled home on an alternative route.
A cafe manager on Church St East said his customers were sitting outside when they heard gunshots.
Bus service disruptions - Due to the following incident and road closures, bus route 321, 670, 743, & 295 are impacted. Please expect delays and cancellations. ^KY https://t.co/B535y4CbBp
— Auckland Transport Travel Alerts (@AT_TravelAlerts) July 14, 2021
They didn't see what happened, the cafe manager said.