475. On 23 June 1993 the Special Rapporteur sent an urgent appeal to the Government on behalf of 'Abdullah al-Hamed, a writer and lecturer at al-Imam Muhammad bin Saud University in Riyadh, as well as a founding member of Lujnat al-Difa' 'an al-Hugug al-Shar'iyya (Committee for the Defence of Legitimate Rights). He was reportedly arrested at his house by members of al-Mabahith al-'Amma (General Intelligence) on 15 June 1993 and was being held in incommunicado detention. Fears were expressed that he might be subjected to torture. Another member of the above-mentioned Committee, Dr. Muhammad 'Abdullah al-Mas'ari, had also been held incommunicado since his arrest on 15 May 1993 and was said to have been deprived of sleep for prolonged periods.