Victims of the man labelled one of the country's worst serial stalkers are already speaking of worries about his release from jail in June.
Glenn Green is serving a two-and-a-half year sentence for criminal harassment, and although the Parole Board has said he poses a significant threat to public safety it can set conditions only for the first six months after his release.
The board said Green has an appalling history of more than 200 convictions, and of particular concern were his many convictions for breaching protection orders, harassment, intimidation, threats, and abuse of the telephone.
Private investigator Daniel Toresen has worked for three of Glenn Green's victims and said the clients have heard about the release and conditions. He is worried Green will re-offend, and said whether that would occur would depend on monitoring put in place.
"It depends on how it is done and how robust it is," Mr Toresen said. "He's been told to stay out of Auckland which is good for some of the victims, so that's a positive and I guess he'll be monitored by GPS, so that's a positive."
Under the release conditions Green will be prevented from living in Auckland or north of Auckland. Included in his special conditions are GPS monitoring, a curfew, and boundaries around where he's allowed to go in Auckland.
For the six months after his release, Green will be banned from using any electronic device capable of accessing the internet, including computers, electronic notebooks or tablets or cell phones. He will not be able to have social media accounts in any name, on Facebook, Twitter, lnstagram or any other platforms.
However Sensible Sentencing Trust chief executive Garth McVicar, describing Green as ticking time bomb, said the organisation plans to step up action to find out why more can't be done to keep him out of society.
"I don't sit in the camp that he can be rehabilitated at all. Ultimately what we've got to do is find out why the system hasn't worked in this particular case. I won't wait until he creates his next victim and then say 'now we can do something'."
Lawyer Adam Couchman has acted for Glenn Green once when he appealed against his sentence, and does not believe he is a public danger.
"My personal view is I don't think he's dangerous in the sense he's a violent person, I think he's guilty of harassment which is pestering to an extreme, but to say dangerous, no. I've dealt over the years with many people I would call dangerous.
"I think if he is given the support that he needs and the assistance, I think he could go well. It's only when the support structures fall away that the problems start."
Also known as Corleone, Goldberg, Carlionne, Casellano and Holden, Green was sentenced to 30 months in 2012 on two counts of criminal harassment. Offending began three weeks after his release from prison in 2011.
The Parole Board said documents found in Green's cell on at least two recent occasions indicated he was planning activities "which again raise concerns for potential victims of his harassing type behaviour".
"On any measure, the risks relating to ... Green's release are high," the board said. "He poses a significant threat to public safety."