E/CN.4/1991/17 page 51 Sri Lanka Urgent appeals 154. On 6 July 1990 the Special Rapporteur sent un urgent appeal to the Government of Sri Lanka transmitting information concerning Mr. K.A. George, a lawyer and human rights activist from Colombo, who was arrested on 29 June 1990, reportedly for sending information abroad about the human rights situation in the country. He is said to be currently held incommunicado in Bambalapitiya police station in Colombo, and fears have been expressed that he may be subjected to torture or ill-treatment while in detention. 155. On 28 November 1990 the Government of Sudan provided the Centre for Human Sights with two lists. The first one contained 345 names of political detainees, their date of arrest (most of them in the second half of 1989) and date of release (from July 1989 to August 1990). The second list contained 21 names of prisoners and detainees released on the occasion of the celebrations of the 21 October 1964 Revolution. Urgent appeals 156. On 31 January 1990 the Special Rapporteur sent an urgent appeal to the Government of Sudan concerning Yousif Hussein Mohammed Al-Amin, aged 48, a geologist and leading member of the Sudanese communist party, who was detained by the military authorities on 13 January 1990. According to the information received I*!r. Hussein, who suffers from heart disease and other serious health problems, was subjected to torture. Fears were expressed that his life was in danger. It was further reported that a number of medical doctors, members of the Sudanese Medical Association, were arrested following strikes in November 1989. One of them, Dr. Mamoun Mohamed Hussein, aged 55, President of the Trade Union Assembly and the Sudanese Medical Association, arrested on 1 December 1989, was allegedly severely tortured and had to be hospitalized. He was reportedly sentenced to death on 10 December 1989. Some of the other doctors arrested following the strikes were the following: Dr. Said Mohammed Abdallah, Dr. el Sheikh Kensh, Dr. Alfateh Mohammed SI Sayed, Dr. Ahmed El Teigani El Taher, Dr. Hasan Shehata, Dr. Mohammed Abdel Xader Helal and Dr. Mohy Omar Hamza. 157. On 18 April 1990 the Special Rapporteur sent an urgent appeal to the Government of Sudan concerning the following persons: Major Arnnaya, Lieutenant Arkanjelo, Mario Chocho, Adelio Ikwada, Franco Mayo, Martin Odeki, Francis Oliha, Mauro Omodok, Dr. Monytuoc Biong, Arop Madut Arop and Arop Bagat. The first eight of the aforementioned were reported to have been arrested around 20 February 1990 and to have been detained since that date without charge or trial at the army barracks in Juba. The reason for the arrest was believed to be their suspected links with, or support for the opposition Sudan People's Liberation Army (SPLA). Dr. Monytuoc Biong, a medical doctor, was reportedly arrested on 13 March 1990 in Khartoum and was said to be held incommunicado without having been charged with any offence. Some of his relatives were said to be SPLA members. Arop Madut Arop and Arop Bagat, both journalists based in Juba, were reportedly arrested in mid-March 1990, and were being held in Xober prison in Khartoum. It was