Cy Walsh was detained until further order after the Supreme Court found he was mentally incompetent when he stabbed his father to death in July 2015.
The 31-year-old was later diagnosed with multiple sclerosis and granted leave from the high-security facility, James Nash House, to treat the condition and progress his rehabilitation.
Earlier this year he was allowed to spend some nights each week in a “step down” or lower security facility, called Ashton House, on the same grounds but will now move there permanently.
Walsh will also be allowed to make visits into the community in the company of just one support person who can now include his mother.
The changes ordered by the Supreme Court came after a further psychiatric report was prepared to determine his progress.
He was found not guilty of the murder of his 55-year-old father at the family’s Adelaide home after the court accepted that he had undiagnosed and untreated schizophrenia at the time.
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