William Beggs will serve the remainder of his 20 year sentence
The man convicted of the "limbs-in-the-loch" murder of a teenager has lost his appeal against his conviction.
William Beggs was found guilty of killing and dismembering Barry Wallace in Kilmarnock, Ayrshire, in 1999.
The 18-year-old's severed limbs and torso were recovered from Loch Lomond, while his head was washed up on a beach near Troon in Ayrshire.
Beggs, 46, originally from Northern Ireland, was ordered to serve a minimum of 20 years for the murder.
He was jailed for life at the High Court in Edinburgh in October 2001.
A full appeal against his conviction got under way last September, in which he argued that the trial which saw him convicted was unfair and that he was a victim of a miscarriage of justice.
Beggs' appeal centred on claims that pre-trial publicity affected his chances of a fair trial.
Concerns were also raised over the legality of his extradition from Amsterdam.
The validity of a search warrant used by police officers to gather evidence was also been questioned.
At the Court of Criminal Appeal in Edinburgh, judge Lord Eassie, sitting with Lady Paton and Lord Bannatyne, issued a 128-page judgement in which they rejected Beggs' appeal.
Lord Eassie told him: "The court has carefully considered the arguments submitted in each of the various grounds of appeal in this case.
"For the reasons which the court has sought to explain fully, the conclusion to which it has come is that none of the grounds is well-founded. Accordingly the appeal must be refused."
Les Brown, district procurator fiscal for Kilmarnock, said he was "pleased" Beggs' appeal had been refused.
"In doing so the court has concluded that Mr Beggs received a fair trial and was justly convicted of the horrific murder of Barry Wallace," he said.
"I hope that the decision of the court will be of some comfort to Barry's parents and brother, who have borne their loss with great dignity and fortitude. I have great admiration for them."