www.opensecrets.org/news/2014/09/two-grand-juries-continuing-probe-into-2012-iowa-payola-scandal/
"one of the grand juries issued subpoenas for emails and financial transactions between at least seventeen individuals, including Paul, Bachmann and Jesse Benton, who was Paul’s campaign chairman at the time and who resigned as campaign manager for Senate Minority Leader Mitch McConnell‘s (R-Ky.) re-election bid late last week after news of Sorenson’s plea broke. A focus of the probe appears to be Dimitri Kesari, Kesari’s brother and several Maryland audio/video companies they are connected to. Kesari was a Paul operative who later was employed by the McConnell campaign."
