Two more persons – William Lee Spartacus Falkner and Jordan W. Rincker - have been apprehended by the FBI since Friday as part of a rapidly evolving investigation into a scheme to attack the June 14 Ultimate Fighting Championship (UFC) Freedom 250 event at the White House.FBI arrested William Lee Spartacus Falkner and Jordan W. Rincker in connection with a plot to attack the UFC Freedom 250 event at the White House. (REUTERS)Falkner was taken into custody on Friday, June 19, around midday. Falkner faces charges outlined in a criminal complaint filed in the Western District of Washington for conspiracy to commit murder. He made an appearance in U.S. District Court in Tacoma at 2:00 PM Pacific Time today.Rincker, 28, from St. Joseph, Missouri, was arrested on Sunday, June 21. Rincker is also charged by criminal complaint in the Western District of Missouri with conspiracy to commit murder. He appeared in U.S. District Court in Kansas City at 2:00 PM Central Time today.