Mueller says Michael Flynn gave 'first-hand' details of Trump transition team contacts with Russians Flynn participated in 19 interviews with either the special counsel or other Justice Department attorneys, according to the filing. Mueller's memo says that some of Flynn's benefits to the probe "may not be fully realized at this time because the investigations in which he has provided assistance are ongoing." In an addendum filing with the memo, Mueller said Flynn "has assisted with several ongoing investigations." Those probes consist of "a criminal investigation," the nature of which was redacted in the memo, and "the Special Counsel's Office's ... investigation concerning any links or coordination between the Russian government and individuals associated with the campaign of President Donald J. Trump," Mueller's document said. Mueller said that in his 19 interviews with federal investigators, Flynn had also "provided documents and communications."