So far, the latest person executed in an electric chair has been Nicholas Todd Sutton, an American serial killer, who was responsible for murdering two acquaintances and his own grandmother in North Carolina and Tennessee from August to December 1979. Convicted and sentenced to life imprisonment for these crimes, Sutton, among three other inmates, later participated in a 1985 prison killing over drugs. For this final crime, he was sentenced to death and executed by electric chair on Feb. 20, 2020 in Tennessee at the Riverbend Maximum Security Prison.