Wellington Coroner Garry Evans today released his report into the death of Karl Kuchenbecker, a Wainuiomata father-of-two, shot and stabbed by Burton in the hills above Lower Hutt on January 6, 2007.
Paul Kuchenbecker told NZPA there still needed to be "accountability for what people, the police, corrections and especially probation, have failed to do".
He said probation was particularly to blame after Burton breached his parole conditions six times before Karl's death, despite being on "zero tolerance" because of his high risk of reoffending.
"If you spit on the footpath and you're on zero tolerance you should be back inside."
Mr Kuchenbecker said any of the government departments involved could have saved Karl's life.
"I feel accountability has got to be there for government departments and the people that work in them".
The family was looking at taking legal action to get that accountability.
He said a meeting with the Sensible Sentencing Trust and lawyers to see what direction the legal action would take would happen soon.
As the family were "secondary victims", it was hard to take legal action, Mr Kuchenbecker said.
"...my son's dead...Who stands up for him? I've got to do it."
He said his "close" family was "coping well" in life without Karl.
Burton was shot and arrested by police on the same day he murdered Karl Kuchenbecker and is serving a sentence of preventive detention, with a minimum non-parole period of 26 years.
Mr Kuchenbecker wanted Burton to remain in prison for good.
"If I've got a say in it he won't be coming out. We don't need those people out."
He said New Zealand needed to look at the parole laws for murderers and rapists. "We're not talking about a shoplifter here".
Burton was a high risk murderer who was likely to reoffend. If the parole laws were different "we'd still have people here now to laugh and talk", he said.
Victims rights are lagging behind in New Zealand, Mr Kuchenbecker said.
"They go through all this trauma and financial hardship that's not of their own doing, and the Government doesn't do anything for them."
