E/CN.4/1993/26 page 93 (b) Bothaina Doka, a nurse from the Huba Mountains who was working at the Khartoum Civil Hospital, was arrested in December 1990 by security officers. During her detention, the officers gagged her and strung her up from the ceiling by her hands (behind her back) and feet and beat her from morning to midnight. She was also denied food and use of the bathroom and threatened with rape; (c) Sharaf Eldin Yassin Mahmond, journalist; Nur al-Huda Mohamed Nur al-Huda; Jamal Ibrahim, leader, Iqd al-Jallad Music Band; Uthman al-Naw, member, Iqd al-Jallad Music Band; Omar Bannaga, member, Iqd al-Jallad Music Band; Anwar Abdelrahman, member, Iqd al-Jallad Music Band; Muhammed Shammat, member, Iqd al-Jallad Music Band; Muhammed Mahmoud, student, Graduate College, Khartoum University; Abdallah Muhammed Ahmed, businessman; Abdelwahid Muhammed Ahmed, businessman; Adel Hassan, employee, Khartoum University; Al-Sir Abdelkarim, employee, Faculty of Engineering, Kartoum University; Baha's al-Din Hassan Daoud, employee, Faculty of Agriculture, University of Khartoum; Omar Muhammed Saleh, journalist, al-Thawra al-Shaabia banned newspaper; Salah Sulayman Bakheit, graphic artist; Ali al-Amin, graphic artist; Abdelwahid Warrag, journalist, al-Quwat al-Musallaha newspaper; Al-Mardi al-Mualim, graphic artist; Muhammed Ali, businessman; Mahmond Jah-Allah, graphic artist; Mustapha Ahmed Hassan, captain, Sudan River Navigation Authority; Al-Amin Kuku, soldier; Muhammed al-Mahdi, Imam, al-Khalifa Mosque, Omdurman; these persons were among a group of 64 people arrested in July 1991 and taken to the Headquarters of the Public Security Organ (PSO) where they were severely beaten and threatened with death. Some days later they were transferred to Beit al-Ashbah, one of the detention centres known as "ghost houses" where the beatings continued with truncheons and whips for several hours. During their stay at Beit al-Ashbah they were placed in a cell together with other detainees who had also been seriously beaten and threatened. Their names are: Adulaziz Gaafer, economist; Abu-Bakr al-Amin, journalist; Alaa Eldin Himoura, trader; Adel Abul-Qassem, state employee; Muhammed al-Balla Abdallah; Atef Amin, Egyptian citizen accused of spying; Idris Muhammed, Ethiopian citizen; Sulayman Muhammed Nur, Ethiopian citizen; Tambai, Ethiopian citizen; Taha Abdul-Gadir, Ethiopian citizen; Omar Adlan, trade unionist; Abdul-Rahman Ibrahim, student; Ali-al-Umdah, businessman; Mustapha Youssef, engineer; and Ibrahim Bakht, university teacher; (d) Ahmed Osman Sirraj, head of the Psychiatry Deptartment of the University of Khartoum, was reportedly arrested on 9 September 1990 and taken to security headquarters. He was held incommunicado for five months during which period he was tortured. (e) Siddig Yousif Ibrahim, engineer, arrested in January 1990 and Abu Bakr Al Amin, journalist, arrested in November 1990. These two persons were reportedly severely tortured for one month before being transferred to Kobar prison. 413. With respect to these cases, the Government reported on 23 November 1992 that a committee headed by the Prosecutor General was appointed to carry out an investigation. According to the conclusions reached by that committee, some of the persons mentioned were never detained. With the exception of one,