Nathan Boulter (32) made headlines in 2012 when he was jailed for eight and a-half years after taking his former partner captive and travelling from Southland all the way to Great Barrier Island.
He held her there for 38 hours and subjected to her to numerous assaults, leaving her with a chipped skull and severe psychological trauma.
At a Parole Board hearing in September, the man was declined early release amid concerns about his "emotional stability and insight".
Boulter is currently serving a sentence of three years two months at the Otago Corrections Facility stemming from two sets of offences.
In July last year, he was locked up for stalking a woman he knew through a mutual friend.
Boulter was visiting her home and taking photos and on one day, he called the victim 300 times and left more than 100 voicemail messages.
When he was back behind bars, his menacing behaviour continued.
While speaking to a prison officer about obscuring the camera in his cell, Boulter talked about his eventual release.
"He said he was going to go back to Invercargill to strangle his ex-partner and ... once he has strangled her he can get on with his life," a police summary said.
The officer tried to dissuade Boulter but he re-emphasised his intentions at least three times.
A report before Parole Board panel convener Judge David Mather raised "serious concerns" about the prisoner’s risk level.
That was exemplified by a meeting Boulter had with a psychologist in March.
The board heard the interview had to be terminated because of his threatening demeanour.
"The psychologist identified an array of unmet treatment needs," Judge Mather said.
"To his credit, Mr Boulter accepted that he has a range of deep-seated issues which need to be addressed. He is unsure how long that will take and acknowledged the possibility that he may need to serve his entire sentence."
The sentence would expire in April 2023.
Boulter’s next meeting with the Parole Board will take place in June next year.
