Schoolgirl Louisa Damodran's killer was today refused permission to apply for parole again for three years after being denied parole in September.
Peter Joseph Holdem, 51, has been in jail since being convicted of murdering six-year-old Louisa near Christchurch in 1986.
Holdem throttled the girl and dumped her body in a river after grabbing her as she walked home from school.
He had just been released from prison for the abduction and attempted murder of a 10-year-old girl.
Police have described Holdem as a cold, calculating killer and an earlier Parole Board report described Louisa's murder as appalling.
Holdem was denied in parole in September and today the Parole Board made a parole postponement order preventing him from again seeking parole before 2010, when it would normally be considered annually.
A similar postponement order was made in 2004.
A psychological report in front of the parole board said Holdem was at high risk of reoffending and had not responded to the numerous interventions he had participated in in prison.
"In summary Holdem probably has had more treatment for his sexual offending than just about any other offender of his type with little apparent gain," the report said.
At one point Holdem said there had been "several hundred" victims of his offending. He now claims there were just 14 others, the parole board said.
The parole board called Holdem a "prolific offender", who was not suitable for parole and would not be "for some time".
Holdem can appeal the postponement order if there is a significant change in his circumstances.
The parole board report said Holdem was "sad and upset" but wished to continue trying to get parole.
They recommended he continue to receive help in prison.