E/CN.4/1995/34 page 93 who were arrested in August 1991. Additional information received indicated that these PROCUP and PDLP activists, imprisoned in the North Remand prison of Mexico City, had been arrested by members of the judicial police of the Federal District and subjected to torture. At the premises of the judicial police of Cabeza de Juárez, Pablo Torres Hernández was subjected over the course of several days to various forms of torture, including near-suffocation with a plastic bag; beatings in the stomach, testicles and back and around the lungs; a beating on the face which caused him to lose consciousness; mock executions by firing squad; striking of both ears simultaneously with the palms of the hand; burnings with cigarettes; and application of electric shocks. Hermenegildo Torres Cruz was injured by several gunshots at the time of his arrest and was reportedly subjected to such torture as beatings with firearms while he was injured, death threats, mock executions by firing squad and striking of both ears simultaneously with the palms of the hands. On the basis of the confessions that they were forced to sign, the activists were tried and sentenced to several years’ imprisonment. The cases were reported to the National Human Rights Commission, which had not yet given an opinion on them. 482. On 21 August 1992, the Special Rapporteur transmitted to the Government the cases of Italo Ricardo Díaz, Delfino de Jesús Aguilar Hernández, Rey Venegas Castro and Rubén Díaz Díaz, who were arrested in June 1991 by members of the judicial police in Mexico City and allegedly subjected to torture. The Government subsequently replied that the National Human Rights Commission had not been able to compile all the documents of the case because the representatives of the complainants had not provided all the documentation required. The additional information about the detention of these persons, who were serving sentences in the North Remand prison of Mexico City, included medical certificates and statements by witnesses and repeated that they were subjected to torture such as beatings all over their bodies, the introduction of icy and mineral water into their nostrils, electric shocks, threats of death and disappearance, and near-suffocation by placing plastic bags over their heads. They were also forced to sign confessions which were used against them afterwards in judicial proceedings. On 24 October 1994 the Government replied that an investigation had been opened in order to determine the responsibility of members of the Judicial Police and agents of the Public Ministry in the prolonged detention and torture of the above-mentioned persons. 483. On 26 August 1993 the Special Rapporteur transmitted to the Government the case of Manuel Manríquez San Agustín, an inmate at the North Remand prison of Mexico City, who had been sentenced to several years in prison allegedly on the basis of confessions obtained under torture. The National Human Rights Commission found evidence of torture and recommended that the Office of the Attorney-General should carry out an investigation. On 25 August 1994 the Special Rapporteur sent a further letter to the Government requesting information about the measures taken in order to follow up the above-mentioned recommendation. Subsequently, the Government sent a note summarizing the measures taken by the Offices of the Attorney-General and the Government Procurator of the Federal District against those presumed to have some kind of responsibility. With regard to some of these officials, it was decided that no offence had been committed; with regard to others the investigation has not yet been completed. In the matter of the "recognition of innocence" put