 He was released, some months after Banda, in September 1960 and in December participated in constitutional talks also involving Banda and Orton Chirwa in London.These were the Lancaster House Constitutional Conference, and the Federal Review Conference, the latter which was to review the Federation of Rhodesia and Nyasaland.Early in 1961, he visited India where he took part in demonstrations at the American and Belgian embassies protesting the CIA-assisted murder of Patrice Lumumba, the first Prime Minister of the Congo.