Ian Murray, the Labour MP for Edinburgh South, says it is a "national scandal' that the Scottish government did not make public the fact that 25 delegates at a Nike conference in the capital on 26 February tested positive for Covid-19.
The Scottish Mail on Sunday has reported that staff at an Edinburgh kilt shop which fitted conference delegates fell ill shortly afterwards, while staff at a Glasgow digital marketing company which shares an office building with Nike developed suspected Covid-19 shortly after the conference was held.
A BBC Scotland Disclosure investigation initially revealed that ministers and health officials were aware of the outbreak by 2 March but did not make the information public.
Nicola Sturgeon said on 12 May she was "satisfied then, and satisfied now, that all appropriate steps were taken" to protect public health in the weeks leading up to lockdown.
“The reason the public should have been told about this at the time is precisely because of the potential impact on workers and businesses," says Mr Murray, who wrote to the first minister last week with a series of questions about the issue.
If the Scottish Government had its way, this would remain a secret. Nicola Sturgeon is guilty of failing to be honest with the people of Scotland."