Almost immediately after the legal Solidarity leadership had been arrested, underground structures began to arise. On April 12, 1982, Radio Solidarity began broadcasting. On April 22, Zbigniew Bujak, Bogdan Lis, Władysław Frasyniuk and Władysław Hardek created an Interim Coordinating Commission ("Tymczasowa Komisja Koordynacyjna") to serve as an underground leadership for Solidarity. On May 6 another underground Solidarity organization, an "NSSZ "S"" Regional Coordinating Commission ("Regionalna Komisja Koordynacyjna NSZZ "S""), was created by Bogdan Borusewicz, Aleksander Hall, Stanisław Jarosz, Bogdan Lis and Marian Świtek. June 1982 saw the creation of a Fighting Solidarity ("Solidarność Walcząca") organization.