New Zealand's longest-serving prisoner will spend at least another three years locked up after a possible parole address proved unsuitable.
Alfred Vincent, 74, who is on a preventive detention sentence which means he has an indefinite jail term, was up before the Parole Board at the end of August to have the viability of a release proposal investigated.
But the board said the Salvation Army accommodation proposed for the multiple sex offender was not viable given that it would only be short-term.
"Given Mr Vincent's age and his consistently assessed high risk of reoffending, it would be inadequate to safely manage his risk," the board's decision says.
Vincent had not sought parole in any case, instead merely wanting a shift in prison location - something the board said was up to prison authorities.
The board issued a postponement order which means he won't appear before the board until around August 2015, though he can apply to be seen earlier if his circumstances change significantly.
"We would hope that this does not mean that all avenues for temporary releases by Mr Vincent are closed," the report said.
"We see a utility, on humanitarian grounds at least, for him to be given the opportunity to participate in suitably escorted outings from time to time."
Vincent was sentenced to preventive detention in 1968 for seven indecency charges on five boys aged 12-14. He had previous convictions and told the board in 2011 that he had abused more than 100 children in the past.
He was given day passes in the early 1980s to work in the community and had weekend leaves for a few months but that was revoked in 1984 when he was charged with preparing to commit a crime in a public place when some boys were seen with their arm around him in a park.