disappearance because “this type of violation is characterized by the attempt to eliminate any element that would allow the detention, whereabouts, and fate of the victims to be determined.”5 43. Bearing in mind the particularities of the instant case, the Commission will ascertain the facts by referring, first, to the circumstances surrounding the detention and disappearance of Víctor Manuel Isaza Uribe; second, to the domestic proceedings initiated in relation to those facts; and, third, to factors in the context that have a bearing on its decision. A. Detention and disappearance of Victor Manuel Isaza Uribe 44. The facts of the instant case occurred in the municipality of Puerto Nare, Department of Antioquia, in the region known as Magdalena Medio. According to the National Center for Historical Memory, this region was the epicenter of guerrilla presence, starting in the early 1970s. For that reason, it became heavily militarized, as of the early 1980s. The Center itself has explained how paramilitary groups surfaced in the region toward the end of the 1970s/early 1980s. It also reports that, from the mid-1980s, paramilitary groups expanded their territorial control and stepped up military operations designed to give them control over the whole of Magdalena Medio. 45. Mr. Victor Manuel Isaza Uribe, of 33 years of age, husband of Carmenza Vélez and father of Jhony Alexander and Haner Alexis Isaza Vélez, was arrested on October 27, 1987 by the officers of the police post in the village known as La Sierra in the municipality of Puerto Nare. The next day he was placed at the disposal of Criminal Investigation Court 64 in Puerto Nare, questioned by the Judge, and remanded to the Puerto Nare prison.6 46. As pointed out by the National Center for Historical Memory, this prison is located a few meters away from the Coast Guard unit of the National Navy and a few blocks from the Bárbula Battalion's military base and the police station.7 47. At the time of his detention. Mr. Víctor Manuel Isaza Uribe had worked for 13 years at Empresa Cementos Nare S. A. and was an active member of the SUTIMAC trade union.8 The petitioners reported that, at the time, Mr. Víctor Manuel Isaza Uribe was also an active member of the UP party. The State did not submit information questioning these statements. 48. Bearing in mind the fact that Mr. Isaza Uribe was a member of the SUTIMAC trade union and, at least, a supporter of the UP party, the Commission considers that the contexts described above are relevant for an analysis of the instant case. 49. A warrant for the preventive detention of Mr. Isaza Uribe was issued on October 28, 1987, without possibility of release, on charges of aggravated homicide.9 5 I/A Court H.R., Case of Velásquez Rodríguez v. Dominican Republic. Preliminary Objections, Merits, Reparations and Costs. Judgment of February 27, 2012, Series C No. 240, par. 134. 6 Appendix. Decision handed down in the appeal against the judgment of the Administrative Court of Antioquia on November 26, 1993. Council of State, Administrative Litigation Division, Unit Three . Santa Fé de Bogotá, September 23 1994. Page 101. 7 Huellas y Rostros de la Desaparición Forzada (1970-2010). Volume II National Center for Historical Memory. Case 4. Víctor Manuel Isaza Uribe: Desaparición Forzada y Represión Antisindical. Available at: http://www.centrodememoriahistorica.gov.co/micrositios/desaparicionForzada/libros-tomo2.html. 8 Appendix. Copy of a certificate issued on November 13, 1989 by the President of the Sole Union of Construction Materials Workers (SUTIMAC). Annex to the initial petition. 9 On November 7, 1989, two years after his disappearance, Mr. ictor Manuel Isaza Uribe was sentenced by the Ninth Higher Court of Medellín to 16 years in prison, after being convicted of the crime of aggravate homicide. as the instigator and perpetrator of the murder of Mr. Francisco Humberto García Montoya. Decision handed down in the appeal against the judgment of the Administrative Court of Antioquia on November 26, 1993. Council of State, Administrative Litigation Division, Unit Three . Santa Fé de Bogotá, September 23, 1994. Page 102.