Three new charges for paedophile

One of New Zealand's most notorious jailed paedophiles is facing three new charges - and they were a key reason he was declined parole last month.

The man in his 60s, who has name suppression, was convicted in 1998 for 17 sex offences, mainly against boys and teenagers. He had been in a position of trust in a top school. He served four years of a seven-year sentence and went on to reoffend in 2002.

Two years later he was convicted and sentenced to preventive detention after being found guilty of unlawful sexual connection with a male aged 12 to 16.

The new charges, which date back to 1985, were laid the same day he made his third appearance before the Parole Board.

The board said the new charges were a barrier to his release, but they also rated him a medium-high risk of reoffending and wanted to see how he responded to a sex offenders' programme he was completing.

Meanwhile, the father of a young boy who was sexually assaulted by the man 21 years ago says his son is still suffering from the traumatic ordeal.

"He is still living at home with us. He is 32 and doesn't work. He got caught up in the mental health system, he is emotionally distressed - the impact has been horrendous.

"[The abuser] put his hands on my son and tried to masturbate him. I mean he didn't sodomise him but I am sure he would have if he could - it was such a breach of trust.

"I'd cut his balls off if I thought I could get away with it."

Parole Board spokesperson Sonja de Friez said inmates on preventive detention were only ever released if deemed safe.

"If inmates are deemed to be unsafe they can be kept in til they die. It is a life sentence."

The man had been described as a model prisoner. He will reappear on June 12 at the North Shore District Court.