The United Nations special rapporteur on indigenous rights says he will be raising concerns about the treaty settlement process in his report on New Zealand.
James Anaya spent last week meeting Maori and Crown officials, including the Minister for Treaty Negotiations and some of the lead iwi negotiators.
He says while some progress has been made on the recommendation by his predecessor Rudolfo Stavenhagen to repeal the Foreshore and Seabed Act, there are clearly problems with the way claims are settled.
"I do note certain initiatives by the government to improve the process," he says.
"There seems to be a resolve by the government to move forward with those. I do have concerns, questions about that and I will be addressing those in my report."
Professor Anaya says the Treaty of Waitangi is a unique model of co-existence and self-determination which puts New Zealand in a better position than many other countries.