Prime Minister Jacinda Ardern said the organisers of a "$100k cash drop" where "fake money" was given away should apologise.
Ardern said she could not "fathom how someone would think that was a good idea".
"It's caused harm, it's caused hurt, they should apologise," Ardern said of The Safety Warehouse, which organised the event.
She said it was likely to have caused a lot of confusion and hurt to people at the event.
On Saturday up to 1000 people showed up at Auckland's Aotea Square expecting to be part of a cash giveaway but instead got mainly discount vouchers resembling $5 notes.
The PR stunt by The Safety Warehouse caused tempers to flare as those gathering up the vouchers discovered it wasn't "real" money.
Police have confirmed they are now reviewing the incident and making inquiries with event organisers. A complaint has also been made to the Commerce Commission.
Safety Warehouse managing director Andrew Thorn said in a statement the company stood by their marketing and the vouchers issued and insisted "real funds" were given away alongside the vouchers.
The online store, which sells protective wear, had advertised that $100,000 in cash would be given away in a "live cash giveaway", with the promise that "ACTUAL MONEY will be flying from the sky".
Mosque terror attack inquiry
Ardern said the Government will appoint a minister to introduce recommendations from the inquiry into the March 15 Christchurch terror attack.
The Prime Minister addressed tomorrow's release of the Royal Commission of Inquiry into the March 15 shooting, which claimed the lives of 51 people.
Ardern said reading the report was "tough" but it would be a lot tougher for those directly impacted by the events of March 15.
She said the report is comprehensive.
She said the attacks showed New Zealand that there are "gaps" in our country's free speech laws.
Ardern said that is something the Government needs to consider when it comes to the inquiry report.
Ardern said there were a number of recommendations that the Government had anticipated - those are the issues that will be addressed sooner.
But she said the Government will outline its thoughts on many of the report's recommendations.
Cabinet met today and Ardern said the Government will unveil some immediate responses to the report.
"We all know the last three years have been particularly tough for New Zealanders."
Ardern met with the victims and survivors of the mosque shooting attacks on Sunday at the Ngā Hau e Whā National Marae in Christchurch.
The meeting, she said, was an opportunity for the victims to voice any concerns, before the report on the shooting comes out tomorrow.
"We have said to them: there are some areas they'll see us respond immediately [to] and others that we will need to come back and work through in more detail, and take a bit more time on."
But she said one of the main things she wanted the victims to know is that "there will be accountability on our side in terms of delivering on the Royal Commission [report]".
"I do want to make sure that after such a hefty piece of work … that we make sure that we're acting upon it."