Earlier this week Paul Flynn MP claimed—"from a usually reliable source"—that the inquiry uncovering former Scottish Secretary Alistair Carmichael's involvement in a leaked memo about Nicola Sturgeon cost the taxpayer £1.4 million.
The tweet claiming the figure has since been deleted: but not before the figure spread on Twitter and further afield.
The BBC's Chris Cook has been on the case:
The government has also confirmed the costs were "minimal" - although they haven't given a specific figure:
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