Prosecutors have begun a legal bid to bring a new case against a man who was cleared of murdering a 19-year-old student more than 20 years ago.
The Crown Office is seeking to use Double Jeopardy legislation to secure a retrial of Francis Auld over the death of Amanda Duffy in Hamilton.
Her body was found on waste ground in the South Lanarkshire town in May 1992.
Judges at the Court of Criminal Appeal will consider if there is compelling new evidence to warrant a fresh trial.
The Double Jeopardy (Scotland) Act 2011 sets out conditions where an accused can be retried for a crime in which they were previously acquitted.
Any retrial requires high court judges to give prosecutors permission to proceed against the accused.
The media are not able to report what was said during the hearing for legal reasons.
Proceedings are being heard by Lord Carloway, Scotland's most senior judge, Lord Bracadale and Lady Dorrian.
The hearing continues.