The Associated Press reports:
The FBI developed a backup plan to protect evidence in its Russia investigation soon after the firing of FBI Director James Comey in the event that other senior officials were dismissed as well, according to a person with knowledge of the discussions. The plan was crafted in the chaotic days after Comey was fired, when the FBI began investigating whether President Donald Trump had obstructed justice and whether he might be, wittingly or not, in league with the Russians.
The goal was to ensure that the information collected under the investigations, which included probes of Trump associates and possible coordination between Russia and the Trump campaign, would survive the firings or reassignments of top law enforcement officials. Those officials included special counsel Robert Mueller, who was appointed eight days after Trump fired Comey in May 2017.