Republican state Sen. Justin Eichorn resigned on Thursday following his arrest earlier this week in an underage prostitution sting. Eichorn submitted his letter of resignation, effective Thursday, less than an hour before the Minnesota Senate was set to take an unprecedented vote to expel him from the chamber.

State Sen. Justin Eichorn submitted his letter of resignation on Thursday, GOP Leader Mark Johnson said in a statement, following a federal criminal charge accusing him of soliciting sex from someone he thought was 17,