Lavinia Dingle holds up a photo of her son Simon, outside the Supreme Court Launceston.
LAVINIA Dingle has spent the last few weeks thumbing through the police file on her son's death.
Simon Duncan Dingle, then aged 27, died after a single punch to the back of the head at Deloraine on January 16, 2010.
Mrs Dingle had been trying to access the police file for three years.
It was finally released after coroner Tim Hill completed his investigation into Mr Dingle's death in December.
``The material in the file is pretty horrendous and pretty confronting, and it's very disturbing,'' Mrs Dingle said.
``But I'm happy to finally view it.''
The release of the coronial report will also allow Mrs Dingle to apply for a death certificate.
In his findings, published yesterday, Mr Hill said that Mr Dingle died of a traumatic subarachnoid hemorrhage caused by a punch to the base of his skull and neck by a 17-year-old Deloraine boy.
The teen met Mr Dingle at the caravan park at Deloraine, where Mr Dingle and his brother were staying while working as fruit pickers. He punched Mr Dingle after hatching a plan with two friends to hit him and rob him.
He pleaded guilty in July 2010 to manslaughter and was sentenced to three years jail and released on parole in early 2011.
Ms Dingle said she believes the charge should never have been downgraded from murder, and would now seek advice on the police file to see if the decision of the Office of the Director of the Public Prosecutions could be challenged.
Mr Hill said that he was prevented by law from finding any fact relating to Mr Dingle's death that was inconsistent with the court's findings.
He said that he decided not to hold a public inquest into the death, as Mrs Dingle had wished, because the court case had disclosed all the relevant material.
``It is not the role or function of the coroner to attribute any moral or legal responsibility for a death,'' he said.
Ms Dingle said she accepted the coroner's statements but would continue to fight to get justice for her son.