“Why wait a week? If they know who they are then fire them now.”
You know how an owl sits in a tree hooting, waiting to see if a mouse breaks cover?
If the leakers have been identified then the mouse has already made a break for it. End it now.
I’m fairly certain that everyone here watched that episode of Game of Thrones where Tyrion told three stories to three people and now think that’s the way to solve every problem.