Victim's mum wants supervision system

Supervising serious violent offenders after their sentences will help keep the community safe, a Victorian murder victim's mother says.

Noelle Dickson has campaigned for reforms since her daughter Sarah Cafferkey was killed by convicted murderer Steven James Hunter 11 days after his parole for other crimes ended in 2012.

She has urged the state government to implement a coroner's recommendation that serious violent offenders be subjected to the same post-sentence supervision orders as serious sex offenders, which came out of an inquest into Ms Cafferkey's death.

"That recommendation needs to be put in place so our community is safe," Ms Dickson told reporters.

"If that had have been put in place prior, Hunter would have had more supervision orders placed on him, there would have been more monitoring that was going on with him."

Judge Ian Gray on Wednesday said Hunter was a serious violent offender who appeared to pose a risk to society on his release.

He said programs and interventions in jail and during parole had not mitigated that risk in respect of his attitude towards violence, but Hunter still had to be unconditionally released into the community at the end of his parole.

Judge Gray noted that if the supervision provisions had applied to serious violent offenders at the time, it would only have been necessary to satisfy a court that Hunter was likely to commit a relevant offence.

The government last month said the sex offender supervision scheme will be expanded to include the state's most serious violent offenders, as recommended by an expert panel that reviewed the sex offender program.

Corrections Minister Steve Herbert said significant changes have been made to the parole system and the government will consider if more are needed after reviewing Judge Gray's report.

"This is a tragic case and not one we want to see repeated," he said.