More said it did not provide reasons for the Minister's decision.
A spokeswoman for Foss said the Minister would not be commenting on the matter without receiving a privacy waiver from Bouwer or his legal representative.
"Mr Bouwer is entitled to his privacy unless he waives that right,'' she said.
At a New Zealand Parole Board hearing in August, Bouwer asked for parole to be declined because of his health concerns.
The board heard Bouwer spent time in hospital, but the details and extent of the illness have not been disclosed.
More said Bouwer's health issues were physical and his mental faculties were not a concern.
Bouwer will appear before the parole board again next September.