this is "cnn breaking news". selected for meeting their high standards . we're following breaking of quality and service. this type of plan lets you say "yes" news. cnn has learned special counsel robert mueller's investigation to any doctor or hospital that accepts medicare patients. into russian interference in the do you accept medicare patients? 2016 election is moving ahead full steam even as it appeared i sure do! so call unitedhealthcare today to remain quiet in the lead-up and ask for your free decision guide. to the 2018 midterm elections oh, and happy birthday... or retirement... in advance. next month. tonight, sources tell cnn mueller has continued to talk to key witnesses and may seek more indictments once the election is over, all leading to a final report likely to be issued before the end of this year. we'll talk about the breaking news with former u.s. attorney, fareed ferrara. our analysts and specialists are standing by. first, let's get the details on the breaking news. our political correspondent sara murray is standing by. you are learning mueller has been anything but quiet the past few weeks. >> that's right, wolf. as you pointed out, he may not be doing a lot in public because the mid terms are weeks away, but behind the scenes plenty has