John Childs, an equity firm owner and prominent Republican donor who has given to U.S. Sen. Marsha Blackburn (R-Brentwood) and the National Republican Senate Committee, was among those charged with soliciting prostitution at a Florida spa tied to an international human trafficking ring, TCPalm reports.

Law enforcement issued warrants for 173 people on charges ranging from human trafficking to racketeering to soliciting prostitution. (Police have also charged Robert K. Kraft, the owner of the NFL’s New England Patriots in the investigation.)

Blackburn last year succeeded Sen. Bob Corker (R-Chattanooga), who made combating human trafficking a major policy objective of his time in office.