The Maori Party and the Green Party are asking the Government why prosecution rates of young Maori appeared to be far higher than Pakeha for the same crimes.
Justice reform group JustSpeak released data which showed that the likelihood of a prosecution for a Maori person aged 10 to 16 was higher in every category of crime except one compared to a Caucasian.
The figures, compiled from New Zealand Police records, showed that 46 per cent of Maori youth apprehended for sexual assault were prosecuted, while 34 per cent of Pakeha faced prosecution. The only category in which Caucasians were more likely to be prosecuted was "miscellaneous offences".
Maori Party co-leader Tariana Turia challenged Police Minister Anne Tolley in the House to explain the discrepancy between Maori and Pakeha prosecutions yesterday.
Ms Turia said that disproportionate treatment of Maori in the justice system had first been identified 30 years ago, and questioned whether this bias was being addressed.