Paul Dally - the man who killed Karla Cardno in 1989 - has again been refused parole.

Dally snatched Karla as the teenager was cycling home in Lower Hutt on May 26.

He then raped and tortured her before burying her alive.

Dally, now 58, will have to spend at least another 18 months in prison before he can be reassessed, a Parole Board decision released today says.

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That decision, delivered by chairman Sir Ron Young, reveals Dally did not seek parole at his early November hearing.

"He accepts that there is significant reintegration work required," Young said.

And the board agreed he "remains an undue risk and cannot be released".

Dally has been in prison for 29 years.

Young said before Dally next appears before the Parole Board further risk assessment should be undertaken "given the last risk assessments appear to have been some five years ago".

READ MORE:
Karla Cardno's murderer Paul Dally to remain behind bars

However, the decision said the 58-year-old had made "significant progress" working within Auckland Prison and was behaving well.

"He is a leading hand in the nursery."

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A psychological report recommended he be moved to another prison where he would be able to be in a self-care unit.

"We suggest that that is most appropriately one of the two other Auckland prisons, either Auckland South or Spring Hill, which both have self-care units available," Young said.

After Dally dragged Karla to his house he repeatedly raped and tortured the 13-year-old for 22 hours.

Karla Cardno was murdered in 1989.
Karla Cardno was murdered in 1989.

He later put her naked, bound and gagged in the boot of his car and buried her alive in a shallow grave at Pencarrow Head.

Dally confessed to police almost six weeks after the killing and led them to the desolate beach.

In 2001, the slain teenager's stepfather, Mark Middleton, was sentenced to nine months in prison over threats he made against Dally.

However, Middleton never served time after the judge suspended the sentence.

His lawyer argued he was suffering from a condition known as chronic hypertrophic grief.

Dally's next Parole Board hearing would be held by the end of April 2021.