The cause and circumstances surrounding the death of Ravenswood man Tyrone Frederick MacQueen remain undetermined, almost 25 years after his disappearance.
Mr MacQueen, a diagnosed schizophrenic, was last seen at his mother's Warring Street home on July 1, 1994.
Despite an extensive two-day police search in nearby bushland, the 25-year-old's body was never found.
In a report handed down on Wednesday, Coroner Simon Cooper excluded the possibility that Mr MacQueen could still be alive.
In his findings, Mr Cooper highlighted how the-then 14-year-old had been "greatly affected" by his younger brother's death in 1982, who he witnessed get run over by a car.
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In the months before disappearing, Mr MacQueen was admitted on multiple occasions for psychiatric treatment at Launceston General Hospital.
In the immediate lead-up to his disappearance, his behaviour, according to his mother's affidavit, became "extremely problematic".
Mr MacQueen was last seen by his 12-year-old niece, who returned home from a school eisteddfod about 11.30pm on July 1 to find her uncle gone.
She described his behaviour that afternoon as "acting very strange".
In his findings, Mr Cooper could not determine if Mr MacQueen's death was accidental, the result of suicide, or a homicide - only that he died in Tasmania on or after July 1, 1994.
He recommended the file remain open and investigations continue, "with a view to attempting to find what became of Mr MacQueen".
- Lifeline 13 11 14