A judge has called for more background information on a farm worker who killed a woman by strangling her and dumped the body in a field.
Harrison has been detained at Carstairs State Hospital
Joseph Harrison, from Brechin in Angus, was sent to Carstairs State Hospital for assessment after admitting the culpable homicide of Susan Third.
The 29-year-old's plea was accepted by the Crown on the grounds of diminished responsibility.
Sentence at the High Court in Edinburgh was deferred until next month.
The latest expert report has suggested Harrison should go to prison rather than be held in a psychiatric institution.
He killed prostitute Ms Third, a 21-year-old mother, after "losing control" when she propositioned him in an Aberdeen street in February 2005.
He put Ms Third's body in the boot of his car and drove it to a field before dumping it at Denside of Catterline, near Stonehaven.
Harrison left the partially-clothed body next to his car before calling his pregnant girlfriend.
On Friday, Judge Lord Abernethy called for a background report on Harrison and a risk assessment before sentencing him next month.
He said: "I will continue this once more unfortunately, but I am afraid it is necessary."
Defence counsel Mhairi Richards QC said it was necessary to get a social work report on Harrison before sentence because he had never before served a prison sentence.