The two victims worked at the construction site, which was the shooting scene, alongside the deceased offender, 24-year-old Matu Tangi Matua Reid, who also worked there, said Relieving Auckland District Commander, Acting Superintendent Sunny Patel.

It remained unknown if the gunman, who had been on home detention on family violence charges, was shot by police or took his own life as the investigation proceeds, according to the police.

A scene examination will continue at the site of Thursday's tragic incident in the largest city of New Zealand, Patel said, adding CBD residents and workers can expect to see a continued police presence in the area as this work is undertaken.

Post mortems are expected to be completed in the coming days, he said.

Thursday's deadly shooting occurred hours before the FIFA Women's World Cup opening match, leaving three people, including the gunman, dead and six others injured, including a police officer.

Patel said the wounded police officer remains in hospital in a stable condition.

Three other people injured in the incident remain in hospital with non-life-threatening injuries, and two
people have been discharged from the hospital, he said.

The assessment from officials is that there is no national security risk and there is no change to New Zealand's security threat level, New Zealand Prime Minister Chris Hipkins told the media, ruling out a terrorist attack.

(With UNI inputs)