E/CN.4/1991/17 page 23 beaten during interrogation. Two USP lecturers were reportedly arrested on 8 October 1989 by plain clothes army officers. They were allegedly beaten while in detention and as a result suffered serious head injuries. Their request to be taken to hospital was allegedly denied. Letters 71. On 15 October 1990, the Special Rapporteur sent a letter to the Government of Gabon transmitting information that Mr. Auguste Ambourouet and Mr. Guy Nang Bekale, both members of the Gabonese Progress Party (PGP), as well as six other members of opposition parties, were arrested in early June 1990 in Port Gentil. Although the six opponents were released before late June 1990, Mr. Ambourouet and Mr. Bekale were reportedly still being held incommunicado, without charges, in Libreville and they had allegedly been subjected to ill-treatment. Government replies 72. On 7 February 1990 the Government of Greece addressed a letter to the Special Rapporteur providing further details regarding a case transmitted to it on 28 July 1988 and its letter of reply of 15 February 1989 (E/CN.4/1989/15, para. 38 and E/CN.4/1990/17, para. 66, respectively). The Greek Government informed the Special Rapporteur that the administrative inquiry concerning the Katsikoyannis case had been concluded and that no findings of guilt against policemen were established. Guatemala Urgent messages # 73. On 27 November 1990, the Special Rapporteur sent an urgent message to the Government of Guatemala concerning Mr. Luis Arturo Arevalo, a Guatemalan national who was allegedly arrested on 3 or 4 November 1990 in Belize by the Special Branch of that country's police force after having been accused of belonging to a Guatemalan armed opposition group. Mr. Arevalo was reportedly tortured in Belize and, around 10 or 11 November, handed over to the Guatemalan military forces (Kaibiles) in Melchor de Mengos, Peten Department. Concern has been expressed that he might be subjected to torture and that his life might be threatened. Urgent appeals and Government replies 74. On 12 January 1990, the Guinean Government sent the Special Rapporteur the following information in reply to his urgent appeal of 11 December 1989 (E/CN.4/1990/17, para. 73): the first four names referred to in the appeal are not known to the services of the Guinean Ministry of National Defence. The last three persons, Togba Traore, Nanfory Camara and Mohamed Ali Bangoura, were taken in for questioning and released. The Guinean Government assured the Special Rapporteur that there was no need for concern about these three persons, since the Government respects human rights.