The Prime Minister is calling comments made by Mana Party leader Hone Harawira about the Maori Party offensive.
Mr Harawira called the MPs John Keyâ s house niggers on his Facebook page.
Speaking in Vladivostok, Mr Key says Mr Harawira's latest outburst is wrong.
"Frankly, I find them offensive about my coalition partners. Secondly, I think New Zealanders would find that term offensive. And I know it's Hone Harawira being Hone Harawira but frankly I think he owes them an apology.
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