After the coup d'état on 1 September 1969, in which King Idris I was deposed, Libya was governed by the Revolutionary Command Council (RCC) headed by Gaddafi. On 2 March 1977, after the adoption of the "Declaration on the Establishment of the Authority of the People", the RCC was abolished and the supreme power passed into the hands of the General People's Congress. Gaddafi then became Secretary-General of the General People's Congress.