The killer of Auckland teenager Christie Marceau has been formally diagnosed with paranoid schizophrenia and denied parole due to a lack of motivation to address his illness.
Akshay Anand Chand, now 21, was sentenced to three years imprisonment and a life-long special psychiatric treatment order after he first assaulted, then later stabbed Marceau to death in 2011.
Marceau was 18.
A decision released by the Parole Board today noted Chand's mental health was stable due to medication.
"He is seen as compliant and attending all unit groups but is seen to have a lack of motivation to do anything beyond what is asked of him or to work to identify his treatment needs," the board said.
"He has been encouraged by staff to explore things relating to his risk to society, his status as an insanity acquittee as well as a prisoner and the psychological factors that may have contributed to his offending."
The board said a recent review by the special patient review panel found Chand was still at an early stage of understanding the link between his illness, personality, and offending.
The board said it was "clear" Chand could not be released as he remained an "undue risk" to the safety of the community.
He may be allowed on ground leave next year, meaning he will be allowed into hospital grounds. The board's decision suppressed Chand's location, but it is believed to be the Mason Clinic, Auckland's forensic psychiatric hospital.
Chand was sentenced in October last year.
Marceau was stabbed to death by Chand at her Hillcrest home on Auckland's North Shore, on November 7, 2011. He committed the crime while on bail for her kidnap and assault.
During the earlier attack he held Marceau at knifepoint and made her undress, terrifying her, before letting her escape and trying to take his own life, the court heard.
Psychiatrists later found that Chand was suffering from a psychotic disorder, most likely schizophrenia. He heard voices and believed Marceau was "the devil".
Justice Helen Winkelmann found that while Chand was deemed insane at the time of the murder, he still had some control at the time of the earlier assault.
She handed down a three-year term for Marceau's kidnapping and assault. He was found not guilty by reason of insanity of the murder.
Winkelmann ordered the jail time to be served concurrently while Chand was in psychiatric care. As a special patient, he can only be approved for release from care by the minister of health.