Cy Walsh has been officially detained in a psychiatric institution for killing his father, former Adelaide Crows coach Phil Walsh.
The 27-year-old was previously found not guilty of murder because he was mentally incompetent when he fatally stabbed his father at the family home in Adelaide in July 2015.
In the Supreme Court on Tuesday, Justice Anne Bampton formally detained Walsh, who is subject to a supervision order for life.
The judge could have released Walsh on licence but after reviewing psychiatric and next-of-kin reports she accepted the request of prosecutors and detained him until further notice.
Walsh was suffering a psychotic episode as a result of undiagnosed schizophrenia when he stabbed the 55-year-old AFL coach 20 times, the Supreme Court ruled in September.
He heard voices he believed were from another dimension, and at times believed his father was the devil, court documents revealed.
His mother Meredith said she was left heartbroken but will continue to love and support her son.
Earlier From 28 September 2016:
Cy Walsh has been found not guilty of murdering his father, former Adelaide Crows coach Phil Walsh, because of mental incompetence.
The 27-year-old had been accused of the stabbing murder of his father at their family home in Adelaide in July 2015.
In the South Australian Supreme Court on Wednesday, Justice Anne Bampton found he was not guilty of murder by reason of mental incompetence.
"I find he was suffering from a psychotic episode as a result of schizophrenia, which at the time of the conduct was undiagnosed," Justice Bampton said.
Cy Walsh stabbed his father 20 times and at least two of the wounds were fatal, the court heard.
He was not intoxicated by any drugs at the time of the stabbing, Justice Bampton said, accepting the forensic reports.
The judge found the objective elements of the case were established beyond reasonable doubt.
She ordered Walsh be subject to mental health supervision for life and it is likely he will be detained for some time at Adelaide's secure mental health facility, James Nash House.
A statement from his mother and Phil Walsh's wife Meredith was also read to the court in which she said she would continue to love her son.
"My heart remains broken. My daughter is also shattered," she said.
"We now all live the devastating consequences of a mental illness that was not understood.
"I will continue to love and support my son as his father has always done."