Scottish First Minister Alex Salmond was accused in the Lords today of "lying to Parliament and other transgressions."
Labour former Scottish minister Lord Foulkes of Cumnock drew gasps of surprise from peers when he levelled the charge at question time.
But when pressed over what the "transgressions" were, he said: "I'll tell you later."
His intervention came during a question about the ministerial code.
Lord Foulkes said: "The ministerial code in Scotland is so narrow and so lax that the First Minister gets away regularly with lying to Parliament and other transgressions."
When peers pressed him for details he said, to laughter from all sides: "I'll tell you later," and asked if Westminster had any powers to "tighten up" the ministerial code in Scotland.
Cabinet Office spokesman Lord Wallace said he was not "sighted" on the question.
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