E/CN.4/1994/31 page 50 230. The Special Rapporteur was also informed that, in connection with a peaceful demonstration held in Bata on 24 November 1992, about 40 students and teachers were arrested by the police and detained for two days. All of them were reported to have been seriously tortured. 231. Furthermore, on 17 December 1992, about a hundred persons were arrested in Malabo, including teachers of the Rey Malabo National Institute of Secondary Education, and released about 10 days later. According to reports, most of them were repeatedly beaten on the head, back, genital organs and the soles of their feet. For example, Celestino Bacale, a member of the Convergence for Social Democracy, sustained serious injuries to the kidney area and broken teeth, and Arsenio Moro several broken ribs and a pierced tympanum. Urgent appeals 232. The Special Rapporteur made urgent appeals on behalf of the persons referred to in the following paragraphs, with regard to whom fears were expressed that they might be subjected to torture while in detention. The dates on which the appeals were transmitted appear in brackets at the end of the corresponding summaries. 233. Twenty-one persons were arrested in Malabo at the end of August 1993 at the time of the return from exile of the leader of the Unión Popular party. It was alleged that the detainees were taken to the barracks of the former Moroccan Guard, where they were doused with petrol and left in the sun for several hours. One of the detainees, who was later released, allegedly suffered a severe beating which caused ear, leg and thigh injuries and left him with great difficulty in walking. It was also reported that one member of the Unión Popular, Pedro Motu, was detained on 22 August and died a few days later in Black Beach prison as a result of injuries caused by torture. (31 August 1993) 234. Francisco Engono Micué, a 51-year-old civil servant from the municipality of Bata and his cousin José Ramón Obama, were allegedly detained on 31 August 1993 in Bata by members of the security police and beaten on the way to the police station. (3 September 1993) 235. Tobías Obiang Nguema, a former army lieutenant, was allegedly detained on 3 September 1993 in Ebebiyín in north-west Río Muni province. It was reported that he was later transferred to Malabo, where he was interrogated at the military barracks situated in the vicinity of the President’s palace, and that during interrogation he was severely tortured to force him to sign a confession concerning his involvement in an attempt to overthrow the present Government. (14 September 1993) Ethiopia Urgent appeals 236. On 21 October 1993 the Special Rapporteur sent an urgent appeal to the Government regarding the following staff of the regional office of the Oromo Relief Association (ORA) in Dire Dawa, eastern Ethiopia: Ahmed Mohamed,