Robert Foye was sentenced to 10 years in 2002

Robert Foye, 28, admitted raping the 16-year-old girl in Cumbernauld in August last year.

The court heard he was allowed out of Castle Huntly to attend an Alcoholics Anonymous meeting but did not return.

At the High Court in Glasgow, Lady Smith said it was an appalling crime. Foye will be sentenced next month.

He attacked his victim six days after absconding from Castle Huntly, near Dundee.

'Distressing and upsetting'

The court heard he had been living rough in woods.

Paul McBride QC said no right thinking person, including the accused, would have anything but "revulsion" for the crime and sympathy for the victim.

"He is appalled at what he has done," said Mr McBride.

Foye admitted raping the girl on 24 August on a path near Dowanfield Road, Cumbernauld.

He was arrested a day after the attack and samples from the victim matched his DNA profile.

Jennifer Bain, prosecuting, said the victim, who was in court, was attending counselling.

She said the attack had impacted on the teenager's schooling.

Lady Smith said the girl's victim impact statement was written in "distressing and upsetting terms".