Authorities could now get a public protection order to keep the likes of Tony Robertson secure, something that wasn't available when he brutally raped and murdered Auckland woman Blessie Gotingco.
The convicted sex offender ran over and abducted the Birkdale woman in May 2014 while he was meant to be under strict supervision and less than six months after finishing his full eight-year jail term for kidnapping and sexually assaulting a young girl.
Robertson is now serving a life sentence and preventive detention for the murder and rape of Mrs Gotingco.
But her husband, Antonio Gotingco, says Robertson was enabled by the incompetence of the Corrections Department.
The family's anger came in response to a Government inquiry which found no failings by Police or Corrections and that one person alone, Robertson, is responsible for the killing.
Robertson had to be released at the end of his sentence, but Corrections Minister Judith Collins points out that has since changed.
"Today, someone like him may well after he's offended in the way he has, now possibly...we could get a public protection order against him. [We] wouldn't have been able to at the time," she told ONE News.
They do not have the capability to manage these high risk sex offenders- Antonio Gotingco
A 2014 act empowers the High Court to issue a public protection order to detain a very high risk individual at a secure facility within prison precincts.
These orders may be put in place for somebody who has served a finite prison sentence, but still poses a very high risk of imminent and serious sexual or violent offending and can't be safely managed in the community.
Mrs Gotingco's family, though, is adamant much more can be done, and are considering their legal options.
"My family and I are both disappointed and devastated by the inquiry's findings," Antonio Gotingco said.
"We remain firmly of the view that the Department of Corrections ineptitude enabled the evil killer to take our Blessie.
"It is glaringly obvious to us and the wider public that they do not have the capability to manage these high risk sex offenders, in fact I think the offenders manage them."
The report author made 27 recommendations about how similar offenders could be better managed.
These include motivating offenders to complete rehabilitation, employing someone dedicated to planning accommodation for high risk prisoners and giving more support and advice to probation officers.