Double killer Gresham Marsh denied parole again

Double killer Gresham Marsh has again been denied parole.

A double-murderer who has spent 22 years in prison for killing an elderly couple for a thrill has again had parole denied.

Gresham Kirsten Leith Marsh murdered John and Josie Harrisson, shooting them repeatedly in their Te Akau, Waikato, home June 1994.

Marsh and a second man involved in the murder, Leith Ray, are serving life sentences for the crimes.

They told police they wanted to see what it was like to kill someone and watch them die.

In a parole hearing on June 29, Marsh unsuccessfully requested release to an unspecified address under the supervision of people who have been supporting him during his time in prison.

The Parole Board saw him again on December 7.

The board heard that probation reassessed a property that Marsh wanted to be released to.

However, it was deemed unsuitable on the grounds that the electronic monitoring company would not visit it because of unsecured dogs.

Probation also had concerns about the degree to which Marsh "kept information from Community Corrections around his previous use of the property to maintain a relationship, and they believe that [Withheld] and [Withheld] were not forthcoming about having overseas students staying at their property when Mr Marsh was previously there on temporary release".

The Parole Board declined parole, saying that the matters "need to be worked through formally".

"Given Mr Marsh's background, it is important that his sponsors and probation can work together and trust each other so that the sponsors have no hesitation in disclosing any breaches or concerning behaviour by Mr Marsh, if he were to be released to them. If that cannot happen, Mr Marsh may need to come up with an alternative release plan," the board said.

Marsh is now on the waiting list for further counselling inside prison and will again be seen by the Parole Board in September next year.