They were found by a Forest Ranger and taken to hospital where Mrs Burton died. The officer leading the investigation recorded, "Never during my twenty-seven years police career in Africa have I experienced such profound fear as prevailed in witnesses' minds during this investigation". One witness was found in Southern Rhodesia and an aircraft of the Police Reserve Flight used to intercept a bus on the Tanganyika border. 22 witnesses with their families were housed under police guard. 400 statements were recorded and cross checked. At 3am on 28 May, fourteen suspects were arrested in a concerted operation. Identification parades were held at which the witnesses were hooded. Disproving an alibi required a visit to the Congo and the co-operation of the Katanga Police. Four men were charged with murder. For the re-assurance of witnesses the Preliminary Inquiry was adjourned to Solwezi 300 miles away, requiring a major logistic and security operation. On 17 August the trial opened at Ndola before Mr Justice Somerhough and four assessors. All four accused were legally represented. On 26 September after 11,605 pages of evidence had been recorded from 61 witnesses, Prosecuting Counsel had to withdraw through illness. Before he could be replaced, Mr Justice Somerhough died. A new trial opened on 8 November. Due to the situation in the Congo the attendance of five witnesses from Katanga could not be secured but statutory provisions enabled their evidence recorded at the aborted trial to be placed before the Court. All four accused were convicted. In July 1961 their appeals to The Federal Supreme Court were dismissed. Their petitions to Appeal to The Privy Council were rejected and they were hanged. In August 1961 G. Mennen Williams, President John F. Kennedy's Assistant Secretary of State for African Affairs visited Northern Rhodesia. The Governor, Sir Evelyn Hone, was at Lusaka airport to bid him farewell when a European resident left the Airport Bar, strode across the tarmac and punched the American. Williams was back in America when the case came up in Lusaka Magistrate's Court. The Governor, as the Queen's Representative, was constitutionally disqualified from giving evidence, but his ADC, Senior Inspector Hawkins, was under no such disability. The accused was convicted and fined £50, then a substantial sum. Discontent over a new constitution led to UNIP inspired disturbances centred on the Northern and Luapula provinces where schools and bridges were destroyed and 27 people killed. 2,691 persons were convicted of as a result of this disorder.