Justice Minister Amy Adams and Corrections Minister Judith Collins have released the report of the inquiry by Mel Smith CNZM into the management of Tony Douglas Robertson.
Robertson was released from prison on 11 December 2013 on six months standard and special release conditions after serving a full sentence of 8 years imprisonment for convictions relating to abduction, indecent assault and attempted kidnapping of children.
On 24 May 2014, before the expiry of his release conditions, he raped and murdered Blessie Gotingco.
Ms Collins says the final report of the inquiry was presented on 29 January 2016 but was not released because of Robertson's appeal against his conviction and sentence.
The report makes 27 recommendations based on its findings, which include that no aspects of Robertson's management by the Corrections Department or the Police provided an opportunity for him to murder Mrs Gotingco.
Ms Collins says the inquiry concluded that Robertson and only Robertson can be held responsible for what happened to Mrs Gotingco.
"The government accepts all of the inquiry's recommendations which are fair and constructive. Most of the recommendations are directed to operational changes within Corrections and are in progress with some completed," she says.