Labour is urging the SNP to answer 25 questions about its links with the company at the centre of the News of the World hacking scandal.
The party has published the list of questions, including asking when First Minister Alex Salmond last met with News International chairman James Murdoch, as well as how much the SNP has spent on advertising with the company in the past four years.
Labour's business manager Paul Martin said: "There are a lot of unanswered questions over the SNP's links with News International."
