The Government is being urged to accept millionaire Owen Glenn's offer to pay for a commission of inquiry into domestic violence and child abuse.
Mr Glenn made his offer on Tuesday when he announced a donation of more than $8 million to help South Auckland's Otara suburb build stronger communities.
Social Development Minister Paula Bennett hasn't ruled out an inquiry but says two parliamentary committees are already holding investigations.
Prime Minister John Key didn't seem keen on the idea when he spoke to reporters on Tuesday.
"I'd need to have a look at that, we would need to consider all the issues and what might come out of it," he said.
The Green Party says he should take up Mr Glenn's offer.
"Owen Glenn is offering much-needed funding to fully investigate what is happening to those families affected by violence," MP Jan Logie said.
"It can show, once and for all, how effective the current service response is, where the gaps are and find the good examples we can repeat."
Mr Glenn is estimated by the National Business Review's rich list to be worth $900m, and there is $80m in the Family Foundation fund which the Otara donation is coming from.
He lived in Otara as a young married man and says he's been concerned about New Zealand's rates of domestic violence and child abuse for some time.
Organisations which will benefit from the $8m donation include a women's refuge and Otara Health, which will establish a family centre.
Mr Glenn, 72, created OTS Logistics Group through a series of acquisitions and sold the business earlier this year.
NZN