DETECTIVES investigating whether perjury was committed at the Tommy Sheridan defamation trial will interview two key witnesses next week.
Helen Allison and Anne Colvin told the trial that they had found Mr Sheridan and another man on a bed with a woman after being invited to what they thought was a VIP party at the Moat House Hotel in Glasgow.
Mr Sheridan denied the claims.
After the trial, Ms Allison told police that, a few days before giving evidence, she was lured to a meeting where she was pressed not to take the stand at the Court of Session.
The Scotsman understands that the women will be interviewed over both inquiries.
The procurator-fiscal at Edinburgh instructed Lothian and Borders Police to investigate perjury claims after Sheridan, former leader of the Scottish Socialist Party, won his defamation action against the News of the World.
The paper had accused the Glasgow MSP of cheating on his wife and taking part in orgies.
The Crown Office instructed the fiscal to examine all evidence given in the case to see if there were grounds for instructing a criminal investigation.
Eleven members of the SSP told the trial that Mr Sheridan had admitted at a party meeting in 2004 that he had visited a swingers' club in Manchester.
Four party colleagues backed Mr Sheridan's insistence that he made no such admission.