Humza Yousaf has pledged the Scottish government will "fully investigate" claims from the UK COVID-19 Inquiry that messages, including WhatsApps, have not been handed over.
The first minister said he has ordered Solicitor General Ruth Charteris to investigate the matter.
He said he is "seeking assurances" that "do not destroy" notices issued by the inquiry had been "fully complied with, not just by ministers but by every relevant Scottish government official".
He pledged the action after counsel to the inquiry Jamie Dawson KC said the Scottish government had been asked to provide "all communications related to key decisions made during the pandemic", including informal messages on WhatsApp, but "no messages" had been handed over.
Scottish Conservative leader Douglas Ross raised the issue at First Minister's Questions at Holyrood on Thursday, asking: "Why has Humza Yousaf not handed over key messages to the inquiry?
"Grieving families deserve answers and full transparency from this government.
"The counsel to the inquiry has said they have not received what they asked from the Scottish government."
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