A man accused of murdering a woman originally from Fort Good Hope, N.W.T., was acquitted of murder in a Perth, Australia, courtroom on Tuesday.

Anthony Thomas Evans was accused of stabbing his fiancée Alana Dakin to death in 2007. Evans was found guilty of murdering Dakin by two Australian Supreme Court juries in 2008 and in 2010, but both convictions were overturned by the Court of Appeal.

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Alana Dakin was killed in 2007 in Australia. A judge acquitted her fiancé, Anthony Thomas Evans, in her death, saying Evans had a psychotic episode at the time of the killing. (Submitted photo)

But on Tuesday, Justice Stephen Hall said Evans experienced a psychotic episode when he murdered Dakin and found him not guilty.

Dakin's family said it was a case of justice denied.

"Really disappointed and really in shock," said Regina Lennie, Dakin’s aunt.

Lennie said she could barely believe the news when she heard the verdict. Her sister, Rose Dakin, told her what happened in court.

"She said he was found not guilty as he was not in the right frame of mind. It was decided upon by a judge, not a jury," said Lennie.

Lennie said the family is exhausted from years of courthouse trials.

"It’s been going on for how many years — ever since he killed her — and it’s still going on and it’s just wearing us out. I know it’s wearing my sister out and her dad," said Lennie.

Though he was acquitted of murder, Evans will remain in custody indefinitely. His detention will be reviewed periodically by a board which deals with mentally-impaired defendants.