E/CN.4/1993/26 page 39 160. The most commonly used methods of torture are: a bottle forced into the anus, cigarette burns, blows, particularly on the genitals, electric shocks, the swing, in which the prisoner is suspended with the hands and feet tied to a rod supported on trestles. The prisoner has a gag in the mouth and is beaten with ropes, hosepipes or sticks. In this position he is insulted and the gag is soaked in liquids which the victim is forced to swallow to choking point. The liquids used include soapy water, dirty water and bleach. Attention was drawn to three specific cases: (a) Kassim Ahmed Dini, an official in the Ministry for Foreign Affairs, and Ali Couba, a bank manager, who were arrested in August 1990 for possession of pamphlets criticizing the government and advocating a multiparty system. During his detention in the north brigade's quarters the former was kept tied to a rod standing on a chair, so that if he made a move to get down from the chair he was left hanging on the rod. Ali Couba was subjected to the swing, beating and electric shocks; (b) Houmed Dini Ali (known as Lakisso) was arrested at Tadjourah in April 1989. As a result of maltreatment while in police custody, his jaw was broken and a rib was cracked. Dominican Republic Information transmitted to the Government 161. In a letter of 7 September 1992 the Special Rapporteur advised the Government that he had received information concerning the case of Felipe de Jesús Medrano García, director of the cultural promotion unit of the autonomous university of Santo Domingo. He was arrested at his home by personnel of the national police forgery squad and was taken to the police palace where he was kept until 24 January, when he was released. He was beaten with a wooden bat on various parts of the body including the buttocks and the loins. He was also struck on the left ear with a rubber truncheon. Equatorial Guinea Information transmitted to the Government 162. In a letter of 21 August 1992 the Special Rapporteur informed the Government that he had received information about the torture and resulting death of the following persons: (a) Alberto Alogo, of Ndumu Eseng, Ebebiyin, Kie Ntem. early 1990 in the Bata police station; He died in (b) Diosdado Abaga Nvo, of Milee Nsomo, Ebebiyin, Kia Ntem. He died on 5 July 1991 after detention by the Makabo police. The death certificate gives the cause of death as severe bruises all over the body, in particular the chest and abdomen and multiple wounds and haematoma.