By BRISTOW MARCHANT | The State (Columbia, S.C.) | Published: April 9, 2021 COLUMBIA, S.C. (Tribune News Service) A Lexington County man suspected of involvement with the deadly Jan. 6 riot at the U.S. Capitol pleaded guilty Friday to federal charges related to threatening messages he left a prosecutor, warning her she could be harmed if something happened to a Proud Boys leader. James Giannakos of Gilbert pleaded guilty at the federal courthouse in Columbia to making threatening phone calls to a former assistant U.S. attorney. The plea means Giannakos could face up to five years in federal prison and up to a $250,000 fine, although Judge Terry Wooten did not impose sentence on Friday.