My understanding is that the Minister of Health was briefed at different junctures in the investigation, so as to be informed of decisions that were being taken by the deputy head of the agency in line with the administrative investigations—as examples, in June 2019 on the results of the fact-finding investigation, in August 2020 on the suspension of the employees, and in January 2021 on their firing.
On April 19th, 2024. See this statement in context.