A Maori rehabilitation programme in prisons has been extended after showing promising results.
The programme, Mauri Tu Pae, runs in the five Maori Focus Units around the country and will now go from 10 weeks to 14.
Department of Corrections director Maori, Neil Campbell, says prisoners who complete the course are 15% less like to reoffend than those who don't.
He says it's a step towards the department's goal of reducing reoffending by a quarter by 2017.
Mr Campbell says the programme focuses on Maori values like manakitanga, which is why it hits home for many prisoners.
The extra month will add drug and alcohol work to the programme.