An 81-year-old with the "doubtful distinction" of being the longest-serving prisoner in New Zealand has again been denied parole.
Alfred Thomas Vincent was one of the first people to be sentenced to preventive detention in 1968 after he was convicted of indecently assaulting five boys aged 12-14.
The child sex offender has spent more than 50 years in prison.
The only time Vincent has spent outside prison was during day passes and weekend leaves in the early 80s - which were revoked when he was caught talking to young boys.
The Christchurch man is suffering from health issues to the extent there was no possibility for the Parole Board to "engage with him directly".